Quiz Topic 4 Lesson 2, Test Topic 4, Quiz Topic 5 Lesson 1, Quiz Topic 5 Lesson 2, Quiz Topic 7 Lesson 2, Quiz Topic 6 Lesson 4, Quiz Topic 7 Lesson 1, Quiz Topic 6 Lesson 3, Quiz Topic 6 Lesson 2, Topic 6 Lesson 1, Quiz Topic 5 Lesson 5
A device that transforms energy into electrical energy is a(an) ________________.
Generator.
Anne is walking around her house looking for examples of how thermal energy is transferred. She knows that heat energy is transferred by three mechanisms: radiation, convection, and conduction. Using these words, label each item with the type of energy transfer that Anne has found in her house. Fireplace.
Radiation.
The transfer of energy by electromagnetic waves is called...
Radiation.
What type of heat transfer occurs when you roast a marshmallow by holding it over a campfire?
Radiation.
How would this electromagnet work?
The wire loops around the nail, which becomes magnetic when the current flows from the battery through the wires.
Kiana is creating a list of the possible ways that the strength of an electromagnet can be altered. Which of the following should Kira not add to her list?
Adding an insulator to the electromagnetic.
The movement of a fluid, caused by differences in temperature, that transfers heat from one part of the fluid to another is called_____.
Convection current.
Anne is walking around her house looking for examples of how thermal energy is transferred. She knows that heat energy is transferred by three mechanisms: radiation, convection, and conduction. Using these words, label each item with the type of energy transfer that Anne has found in her house. AC unit.
Convection.
The number of complete waves that pass a given point in a certain amount of time is called a _____.
Frequency.
Jacob wants to measure the current traveling through the straight wire in his experiment. He uses a(n) ____________ as his tool. He places the wire in between two permanent magnets to measure the current created by the magnetic field.
Galvanometer.
Mrs. Camet measured the voltage in her circuit and found it to be 120 volts. She knew that the resistor she had placed in her circuit had a resistance of 1,500 ohms. What was the current in her circuit in amps?
0.08 amps.
He is using identical materials to create three different electromagnets of varying strength. How can the same materials be used to create a stronger electromagnet?
Add more loops of wire around the nail to increase the magnetic field.
Sunlight shines on the school and transfers heat to the black roof. This is an example of ___________.
Absorption.
The process by which an object takes in light is ___________.
Absorption.
When the man hammers harder on the ladder, the waves created will have a greater _____ and will transfer more _____.
Amplitude. Energy.
A signal that allows for continuous record of some kind of action is a(n) _______________.
Analog signal.
Erin learns that electric forces are (attractive / repellent / neutral / explosive) between particles like protons and electrons.
Attractive.
Mr. Nick also wants to make a chart to show which direction the magnetic field is flowing for each of his electromagnets. How would he determine the direction of the magnetic field for the electromagnets?
By using the right-hand rule to see which way his fingers go to determine the direction of the magnetic field.
Missy wants a better look at her lipstick application, so she used her mother's makeup mirror to make the area look larger. What type of mirror was used in the makeup mirror?
Concave.
____________ is a mirror with a surface that curves inward or a lens that is thinner at the center than at the edges.
Concave.
Anne is walking around her house looking for examples of how thermal energy is transferred. She knows that heat energy is transferred by three mechanisms: radiation, convection, and conduction. Using these words, label each item with the type of energy transfer that Anne has found in her house. Boiling water in a pot.
Conduction.
What type of heat transfer occurs when eggs fry in a pan?
Conduction.
A _____________ is a material that allows electric charges to flow.
Conductor.
Phineas and Ferb want to jump on a bounce house. Ferb begins jumping in a steady pattern, making small waves in the bounce house. Phineas starts jumping on the bounce house too. Suddenly, Ferb goes twice as high even though he did not put any extra effort into jumping. What type of wave interaction is this?
Constructive interference.
Seawater near the equator is quite warm, while seawater near the poles is considerably colder. Water currents that flow from the equator to the poles move heat from warmer climates to colder ones. These currents move heat by the process of _____. When a volcano erupts, hot molten rock can come to Earth's surface. This lava burns or melts most things it touches. The lava is so hot it can set a tree on fire even if the tree is several feet away from ir. This phenomenon is caused by the process of _____. On a sunny beach, the sand becomes hot enough to be uncomfortable to your bare feet. However, if a wave washes over the hot sand, the cooler water removes heat from the sand by the process of _____.
Convection. Radiation. Conduction.
Mark wanted to learn more about the blood from his nose bleed, so he took out his microscope and created a slide of his blood. With the magnification provided by the microscope, Mark saw that his blood was made up of many red cells in a clear fluid. Which of the following provides magnification in a microscope?
Convex Lenses.
Bob and Sam are jumping on a trampoline. When they jump at the same time, Bob makes a wave crest and Sam makes a wave trough. What type of wave interaction occurred?
Deconstructive interference.
Mr. Nick was organizing a box of resistors by resistance range. He knows that there are several factors that go into determining the resistance. Which of the following factors is resistance dependent on? (Three correct answers.)
Diameter. Material. Temperature.
The bending or spreading of waves as they move around a barrier or pass through an opening is ___________.
Diffraction.
Jenny was researching what makes certain surfaces have mirror-like qualities. She knows that most mirrors are made from aluminum, as are soda cans. She wondered why she can see her face in a mirror but not in a soda can. The soda can, however, has a rougher surface, so that ____________ reflection occurs.
Diffuse.
A signal that allows for a record of numerical values of an action at a set of continuous time intervals is a(n) _______________.
Digital signal.
Nicholas was comparing two different recordings of a song that he had made. One recording was from a digital signal, and the other was from an analog signal. What differences are there between the digital and analog recordings? (Two correct answers.)
Digital signals can be better stored electronically. Analog signals are higher resolution.
Kim explains the difference between alternating and direct currents to her class. What is the primary difference between the two currents?
Direct current always flows in one direction, while alternating current keeps changing direction.
A complete, unbroken path through which electrical charges can flow is a _____________________.
Electric circuit.
The continuous flow of electric charges through a material is a ________________.
Electric current.
These forces can be experienced over a distance due to (electric charge / potential energy / electric discharge / electric fields).
Electric fields.
A device that transforms electrical energy to mechanical energy is a ___________________.
Electric motor.
The process of generating an electric current from the motion of a conductor through a magnetic field is called ______________.
Electromagnetic induction.
Information that is sent as a pattern of waves, such as visible light, microwaves, and radio waves is a(n) _____________.
Electromagnetic signal.
A magnet created by wrapping a coil of wire with a current running through it around a core of material that is easily magnetized is called a ______________.
Electromagnetic.
Tom is comparing information about solenoids and electromagnets for a class project. Read each phrase and determine if it describes either a solenoid or an electromagnet. "has a ferromagnetic core"
Electromagnetic.
Tom is comparing information about solenoids and electromagnets for a class project. Read each phrase and determine if it describes either a solenoid or an electromagnet. "used in MRI machine".
Electromagnetic.
The relationship between electricity and magnetism is called ______________.
Electromagnetism.
A ________ is a tiny, negatively-charged particle that moves around the outside of the nucleus of the atom.
Electron.
Information that is sent as a pattern in a controlled flow of current through a circuit is a(n) _____________.
Electronic signal.
We are constantly surrounded by many types of energy transfers and transformations, showing that energy in a system is conserved. Which statements are true about how energy is conserved through transfers and transformations? (Two correct answers.)
Energy is conserved when thermal energy is transferred from your body to a coat. Energy is conserved when some of the chemical energy from burning a candle is transformed into thermal energy, while the rest of the chemical energy is transformed into light energy.
Nina learns about different types of waves in her science class. What does every type of wave transfer?
Energy.
Select the list below that includes all transparent materials.
Glass of water, phone screen case, magnifying glass.
On a hot summer day , a piece of ice is removed from a cooler and placed in a cup that is sitting on a picnic table. which of the following statements are true about what happens to the ice and the cup over time? (Two correct answers.)
Heat moves from the ice to the cup. The cup changes temperature.
A student likes to attend football games, no matter how cold and snowy the weather becomes. She is going to a game on a very cold day and takes along a hand warmer. She activates it and tucks it into the glove she is wearing. She holds her hands together, and before long, her hands are warm. Which best describes how her hands were warmed?
Heat was transferred by conduction, resulting in an increase in kinetic energy.
Jimmy wanted to convert the analog recording into a digital signal so that he could put it on his mp3 player. What could Jimmy do to get the highest quality digital signal from the analog recording?
Higher sampling rate of analog signal.
How would increasing the magnetic force of a magnet change the pattern of magnetic field lines between its poles?
If the strength of the magnet is increased, the field lines would be closer together.
Mrs. Camet measured the voltage in her circuit and found it to be 120 volts. She knew that the resistor she had placed in her circuit had a resistance of 1,500 ohms. If she increased the voltage in the circuit and kept the resistance the same, what would happen to the amount of current?
Increase.
A material that does not easily allow electric charges to flow is called a...
Insulator.
The family replaced the windows in their home with double-hung windows. This helps because a layer of gas between the two panes of glass acts as a good _____. They added a layer of fiberglass to the outside of their metal hot water heater. This saves energy because the metal is a good _____ , but the fiberglass is a good _____. They wrapped all their copper pipes that carry hot water with layers of paper. Their energy bills will be less because the metal is a good _____, but the paper is a good _____.
Insulator. Conductor. Insulator. Conductor. Insulator
The interaction between waves that meet is ___________.
Interference.
Timothy and his group were making a poster for their science lab to depict the ways that electricity and magnetism work together. Which of the following should the group add to their poster? (Two correct answers.)
Magnetic fields can induce a current. A current can induce a magnetic field.
Suppose a space mission is testing samples of the materials listed in the table. The temperature changes are the same for each material tested and the same amount of mass is used for each test. Which statement would the researchers find to be true? Beryllium ~ 1830 Inconel ~ 435 Stainless Steel ~ 461 Titanium ~ 544 (Two correct answers.)
It takes more energy to raise the temperature of a sample of beryllium than it does for a sample of titanium. It takes less energy to raise the temperature of a sample of stainless steel than it does for a sample of beryllium.
Alice enjoys walking to the beach and photographing the sunset. When she downloads the images to her computer, she saves two different versions. She keeps one version with the full amount of pixels, so that she can use the images for any project in the future. In the second version, she reduces the number of pixels by half. What would be a benefit of reducing the number of pixels?
Less storage space.
The contents of the bucket were in a _____ state. If the contents were heated up enough, they would change to a _____.
Liquid. Gas.
The region around a magnet where the magnetic force is exerted is known as the_____________________.
Magnetic field.
The ends of a magnetic object, where the magnetic force is strongest is the ______________________.
Magnetic pole.
_____________________ is the force of attraction or repulsion of magnetic materials.
Magnetism.
What types of material attract a magnet?
Materials that contain iron.
Which are associated with Mechanical Waves? Visible light Ocean waves Sound waves Must have matter to travel Travels with or without a medium
Ocean waves. Sound waves. Must have matter to travel.
______________ states that resistance in a circuit is equal to voltage divided by current.
Ohm's Law.
Reba was laying on the beach looking up at the sky. she wondered why things had color at all, such as the sky being blue. What makes the sky appear to be blue?
Only blue light is reflected by the particles in the atmosphere.
____________ is a type of material that reflects or absorbs all of the light that strikes it.
Opaque.
______________ is an electric circuit in which different parts of the circuit are on separate branches.
Parallel circuit.
A small, uniform shape that is combined with others to make a larger image is a(n) ____________________.
Pixel.
Mandy is building a diorama showing the parts of an atom. She wants to better understand the effects of electric forces. An atom is made up of particles called protons, neutrons, andelectrons.
Protons are (+), neutrons are neutral, and electrons are (-).
What tests could you perform to determine which magnet has a stronger magnetic force? (Two correct answers.)
Put both magnets on a refrigerator door, and test which requires more force to pull it off the door. Pour iron filings onto both magnets while they are apart and see which filings arrange into lines that are closer together.
Sunlight bounces off the surface of a pool is an example of ___________.
Reflection.
The bouncing back of an object or wave when it hits a surface through which it cannot pass is __________.
Reflection.
The bending of waves as they enter a new medium at an angle, caused by a change in speed is ___________.
Refraction.
Waves of light are bent as they shine through the water to the bottom of the fish tank. This is an example of _______________.
Refraction.
Jenny was researching what makes certain surfaces have mirror-like qualities. She knows that most mirrors are made from aluminum, as are soda cans. She wondered why she can see her face in a mirror but not in a soda can. The mirror is polished smooth, so that ____________ reflection occurs.
Regular.
The electric forces are (attractive / repellent / neutral /explosive) between particles like two protons.
Repellent.
______________ is the measure of how difficult it is for charges to flow through an object.
Resistance.
The increase in the amplitude of a vibration that occurs when external vibrations match an object's natural frequency is __________.
Resonance.
______________ is an electric circuit in which all parts are connected one after another along one path.
Series circuit.
The total kinetic and potential energy of all the particles of an object is called...
Thermal energy.
Tom is comparing information about solenoids and electromagnets for a class project. Read each phrase and determine if it describes either a solenoid or an electromagnet. "created from a stacked loop of wires".
Solenoid.
The amount of heat required to raise the temperature of 1 kilogram of a material by 1 kelvin is called...
Specific heat.
Some kids are playing with a jump rope. They notice that they can make transverse waves when they shake the rope up and down. They shake it quickly and notice that the wave that forms appears to beholding still. What type of wave interaction is this?
Standing Wave.
_____________ is a buildup of charges on an object.
Static electricity.
Talia was reading about the differences between the two types of transformers. She learned that ____________ transformers have more loops in their primary coils than in their secondary coils. These transformers are typically used in objects like laptop chargers.
Step-down.
____________ transformers have fewer loops in their primary coils than in their secondary coils. These transformers assist in transferring electricity between locations.
Step-up.
Select the list below that includes all translucent materials.
Sunglasses, dirty window, tissue paper.
The measure of the average kinetic energy of the particles in a substance is called...
Temperature.
You are camping and it is time to build a campfire. You gather logs and stack them loosely, and then you add small twigs and leaves to make the fire easy to light. As you sit by the fire, the logs burn bright in the darkness, and you feel the heat coming toward you.Which of these statements are true about the amount of energy transformed in the camp fire? (Two correct answers.)
The Law of Conservation of Energy applies to these transformations. The amount of heat and light energy released equals the amount of chemical energy that is burned.
When a boy and his friends arrive at a barbecue, they offer to help their friend cook. They place meat and vegetables from the refrigerator onto the hot grill. When the food is cooked and taken off the grill, it is at a much higher temperature than it was before it was cooked. Which statements are true about the food? (Two correct answers.)
The kinetic energy of the food particles increased, causing the food temperature to rise. The thermal energy of the food increased.
A new home had a wooden floor put down in cool weather. As the weather became warmer, the floor started to buckle, rising up in the middle of the floor. The floor was fixed by trimming the edges of the floor so that there was a space between the flooring and the wall. Choose the response that best explains why this helped to make the floor flat again.
The particles in the floor increase in thermal energy in warm weather, increasing the kinetic energy of its particles and making it expand. Trimming it gave it room to expand.
Mark was creating a chart comparing the potential energy between charged particles and the potential energy of magnets. Which of the following is true?
The potential energy between both like charges and like poles increases as they move closer together.
How does potential energy change when you pull a magnet off a refrigerator door?
The potential energy increases between the magnet and the door.
What did Oersted discover about electricity and magnetism?
They are related: a flow of charge creates a magnetic field.
The swimmer in the pool is making waves when he swims. Choose two sentences that describe both the swimmer's waves and the waves of the worker makes when he hammers on a ladder. (Two correct answers.)
They both transfer matter. They both need matter to travel through.
You probably use the term heat many times a day. As an example, when you cook dinner, you heat your dinner on a hot stove. When you place a piece of cool metal in the sun, it is heated by the sun's energy. Why is heat the correct term to use in these examples?
They show that heat flows from something warmer to something cooler.
Energy from the sun warms the beach by _____. The breeze is warm enough to keep you warm, but it also keeps you from overheating. Ocean breezes move because energy is _____. When you lie down on the sand, you spread a beach towel down so that the sand will not make you too hot by _____.
Transferring heat by radiation. Transferred by convection. Transferring heat by conduction.
In photosynthesis solar undergoes a _____ when it changes from light energy to chemical energy. when the sun warms Earth's surface, thermal energy is _____ to land and water
Transformation. Transferred.
Baking cookies in the oven is an example of how energy is _____. Electrical energy is _____ to _____.
Transformed. Transformed. Light and thermal energy of the coils.
A device that increases or decreases voltage, which often consists of two separate coils of insulated wires wrapped around an iron core is a(an) ________________.
Transformer.
____________ is a type of material that scatters light as it passes through.
Translucent.
____________ is a type of material that transmits light without scattering it.
Transparent.
Which are associated with Electromagnetic Waves? Visible light Ocean waves Sound waves Must have matter to travel Travels with or without a medium
Visible light. Travels with or without a medium.
______________ is the difference in electrical potential energy per charge between two places in a circuit.
Voltage.
Mr. Rick was building a circuit connecting a battery to a light bulb to a battery. The current flows due to a difference in potential energy called ____________. The light bulb is a(n) ____________, which slows the flow of current in the circuit.
Voltage. Resistor.
A burst of energy that travels through an electric circuit when it is closed is called _______________.
Wave pulse.
Using the right-hand rule, in which direction will the single wire move, and in which direction will the loop rotate?
Wire moves down, loop rotates left.
Select the list below that includes all opaque materials.
Wooden table, brick wall, refrigerator door.
