Science Multiple Choice Questions

If household voltage is 120 volts, what is the power rating of a light bulb with 0.5 amps of current flowing through it: 120 watts 600 watts 60 watts 6 watts

60 watts

An object changing direction is an example of: Acceleration Speed Velocity Constant rate

Acceleration

The rate at which velocity changes is called: Instantaneous speed Direction Acceleration Motion

Acceleration

If you know a car traveled 300 kilometers in 3 hours, you can find its: Acceleration Direction Average speed Velocity

Average speed

Waves combine to make a wave with larger amplitude in a process called: destructive interference constructive interference reflection refraction

constructive interference

Visible light is an example of: nuclear chemical electromagnetic electrical

electromagnetic

The ability to do work or cause change is called: energy velocity friction transfer

energy

Refraction occurs when a wave: enters a new medium at an angel hits a surface through which it cannot pass moves around a barrier interferes with another wave

enters a new medium at an angle

According to Newton's third law of motion, when a hammer strikes and exert force on a nail, the nail: creates a friction with the hammer disappears into the wood exerts an equal and opposite force on the hammer moves at a constant speed

exerts an equal and opposite force on the hammer

In physical science, a push or pull is called a: force acceleration inertia motion

force

The distance between two corresponding parts off a wave is the wave's: amplitude vibration frequency reflection

frequency

Potential energy that depends on height is called: gravitational potential energy elastic potential energy kinetic energy mechanical energy

gravitational potential energy

Mechanical waves are classified according to: their size their shape how they move their source

how they move

The tendency of an object to resist change in its motion is known as: mass inertia force balance

inertia

The interaction between two waves that meet is called: reflection refraction diffraction interference

interference

Energy is measured in units called: pounds joules horsepower meters

joules

The energy associated with motion is called: elastic potential energy kinetic energy gravitational potential energy nuclear energy

kinetic energy

Who do you see lightning from a distance storm before you hear thunder: the thunder is produced after the lightning your eyes react faster than your ears light travels faster than sound sound travels faster than light

light travels faster than sound

Waves that move the particles of the medium parallel to the direction in which the waves are traveling are called: longitudinal waves traverse wave surface waves combination waves

longitudinal waves

Which of the following is the SI unit of acceleration : m/s m/s^2 m^2/s s^2/m

m/s^2

The amount of matted in an object is called: inertia mass force balance

mass

The energy associated with the motion and position of an object is called: gravitational potential mechanical kinetic potential

mechanical

What type of energy does a spinning turbine have: thermal electrical nuclear mechanical

mechanical

When you rub your hands together on a cold day you use friction to transform: mechanical to thermal nuclear to electrical thermal to nuclear electrical to electromagnetic

mechanical to thermal

When you multiply mass times velocity, you are looking for what: inertia momentum acceleration force

momentum

The charge on an electron is ________

negative

The law of conservation of energy states that when one form of energy is transformed to another: energy is created in the process some amount of energy cannot be accounted for energy is destroyed in the process no energy is destroyed into mechanical energy

no energy is destroyed into mechanical energy

The charge on a proton is ________

positive

The rate at which energy is transferred is called: time joules work power

power

The bending of waves due to change in speed is called: reflection refraction diffraction interference

refraction

What occurs when vibrations traveling through an object match the object's natural frequency: reflection refraction diffraction resonance

resonance

When an incoming wave combines with a reflected wave in such a way that the combined wave appears to be standing still, the result is a: longitudinal wave standing wave traverse wave surface wave

standing wave

The buildup of charges on an object is called: static discharge static electricity positive charge negative charge

static electricity

Unlike kinetic energy, potential energy is: conserved energy of motion not measurable stored

stored

The ampere is a unit of: magnetism electric circuit electric charge temperature

temperature

According to the law of conservation of momentum, when two objects collide in the absence of outside forces: velocity depresse velocity increases the object have the same momentum before and after they collide the objects have more momentum after they collide than they did before

the object have the same momentum before and after they collide

Which of the following is an example of increasing friction intentionally: waxing skis adding grease to gears on a bike throwing sand on an icy driveway oiling a squeaky door

throwing sand on an icy driveway

The force of gravity on a person or object at the surface of a planter is know as: mass inertia air resistance weight

weight

What is a disadvantage of using fuses: when a fuse burns out, it cannot be used again A fuse shuts off when the current gets too hight A fuse contains thin strip of metal that can melt A fuse prevents circuits from overheating

when a fuse burns out, it cannot be used again

The force that one surface exerts on another when the two rub against each other is called: Friction Acceleration Inertia Gravity

Friction

When an object's position relative to another object is changing: It is in motion It is speeding It had a high velocity It is accelerating

It is in motion

The steepness of a line on a graph is called the: Rise Run Slope Vertical axis

Slope

The greater the mass of an object: The easier the object starts moving The greater its inertia The more balanced it is The more space it takes up

The greater its inertia

If an object moved in the same direction and at a constant speed for 4 hours, which of the following is true: The object's speed changed during the 4 hours The object's velocity did not change The object accelerated during the 4 hours The object decelerated during the 4 hours

The object's velocity did not change

What happens when two forces act in the same direction: They cancel each other out The stringer one prevails Their strengths are added Their sun divided by two is the total force

Their strengths are added

Speed equals distance divided by: Time Velocity Size Motion

Time

When you know both the speed and direction of an object's motion, you know the: Average speed Instantaneous speed Distance traveled Velocity

Velocity

An example of something that stores chemical energy is: light a microwave lightning a plant

a plant

Which of the following has kinetic energy: a rock poised for a fall an archer's bow that is drawn back a car waiting at a red light a rolling bowling ball

a rolling bowling ball

Forces can be added together only if they are: acting on the same object balanced forces unaffected by gravity substantial

acting on the same object

How would you calculate an object's mechanical energy: subtract its potential energy from its kinetic energy multiply its kinetic and potential energies subtract its kinetic energy from its potential energy add its kinetic and potential energies

add its kinetic and potential energies

The law of universal gravitation states that any two objects in the universe that have mass, without exception: attract each other repel each other combine to provide a balanced force create friction

attract each other

Moving water can be used to produce electricity because: chemical energy can be transformed into mechanical energy all forms of energy can be transformed into other forms potential energy can be transformed into kinetic energy energy can be transformed into power

all forms of energy can be transformed into other forms

In a series circuit with three bulbs: there are many paths for the current too take the remaining two bulbs are not affected if one bulb burns out all of the bulbs become dimmer if more bulbs are added a switch is never used

all of the bulbs become dimmer if more bulbs are added

The maximum distance that the particles of a medium move from the rest position is the: amplitude of the wave wavelength of the wave frequency of the wave speed of the wave

amplitude of the wave

A change from one form of energy into another is called: an energy increase conservation of energy work an energy transformation

an energy transformation

What are the highest and lowest points on a standing wave called: nodes antinodes compressions rarefactions

antinodes

How can you increase the momentum of an object: by decreasing its velocity by increasing its mass by increasing its friction by decreasing its acceleration

be increasing its mass

Which of the following is an example of rolling friction: between your toes and the sidewalk as you walk between your bike tires and the road as you ride between a boat and the water as it sails between two hands being rubbed together

between you bike tired and the road as you ride

What type of energy transformation is taking place when natural gas is used to heat water: mechanical to electromagnetic electromagnetic to chemical chemical to thermal thermal to mechanical

chemical to thermal

Materials through which charge can flow easily are called: insulators conductors resistors magnets

conductors

The highest points of a traverse wave are called: troughs crests nodes wavelengths

crests

According to Ohm's law, resistance is equal to voltage divided by: time conduction current potential

current

Power is calculated by multiplying voltage by: current energy resistance voltage

current

Waves combine to produce a smaller or zero-amplitude wave in process called: destructive interference constructive interference reflection refraction

destructive interference

A complete unbroken path through which electric charges can flow is: electric circuit electrical resistance magnetic field line magnetic pole

electric circuit

The force that pulls falling object toward Earth is called: gravity free fall acceleration air resistance

gravity

A connection that allows current to take the path of least resistance is called: short circuit series circuit parallel circuit grounded circuit

grounded circuit

Energy stored in the nucleus of an atom is called: chemical energy mechanical energy electromagnetic energy nuclear energy

nuclear energy

A device used to oped and close an electric circuit is a: light bulb energy source switch resistor

switch

The momentum of an object is in the same direction as its: force acceleration velocity inertia

velocity

Mechanical waves are created when a source of energy causes a medium to: move compress expand vibrate

vibrate

What causes charges to move in a circuit: voltage energy electricity magnetism

voltage

A disturbance that transfers energy from place to place is called a: wave medium vibration compression

wave

According to Ohm's law, what is the resistance of a light bulb if the applied voltage is 9.0V and the current is .30A: .033 ohms 2.7 ohms 30 ohms 8.7 ohms

30 ohms

If an electric water heater uses 40 kW of power and runs for 8 hours, what is the total amount of energy used: 5 kilo-watt hours 32 kilo-watt hours 48 kilo-watt hours 320 kilo-watt hours

320 kilo-watt hours

In speed-versus-time graph, a straight line shows that acceleration is: Decreasing Increasing Changing Constant

Constant

Which of these is an example of deceleration: A bird taking off for flight A roller coaster moving down a steep hill A car approaching a red light An airplane following a straight flight path

A car approaching a red light

A place or object used for comparison to determine if something is in motion is called: A position A reference point A constant Velocity

A reference point

The basic SI unit of length is the: Meter Foot Inch Mile

Meter

On a graph showing distance versus time, a horizontal line represents an object that is: Moving at a constant speed Increasing its speed Decreasing its speed Not moving at all

Not moving at all