Science: Conduction, Convection, and Radiation Test!!
What energy transfer is the following: A hot horseshoe transfer heat to the tongs
Conduction
What energy transfer is the following: A pot sitting on a hot burner
Conduction
What energy transfer is the following: A spoon gets warmer after sitting in a bowl of soup
Conduction
What energy transfer is the following: An oven mitt gets warmer while transporting a hot baking dish
Conduction
What energy transfer is the following: Heat from the table is absorbed by ice cubes
Conduction
What three ways can heat transfer?
Conduction, Convection, and Radiation
Conduction is the transfer of ________ energy from one material to another by direct ___________.
Contact (touching)
What energy transfer is the following: A bowl of oatmeal cools
Convection
What energy transfer is the following: Hot air inflates a hot air balloon
Convection
What energy transfer is the following: Ocean currents
Convection
A __________ ___________ is formed when warm fluid rises and cold fluid sinks.
Convection Current
The _________ air is eventually ________ by the ground and again begins to rise.
Cool, heated
The warming of the _________ surface occurs mostly through radiation form the sun.
Earth's
What energy transfer is the following: A microwave heats food while using microwaves via the Electromagnetic Spectrum
Radiation
What energy transfer is the following: Marshmallow heats over a fire
Radiation
What energy transfer is the following: Water is warmed over a fire
Radiation
This continual process of warm air rising and cool air sinking creates a ___________ movement of air called a convection ___________.
circular, current
Convection is the transfer of thermal energy by the _____________ or movement of a _________ or __________.
circulation, liquid, gas
Heat transfer between two solid objects that are in contact with each other is ______________.
conduction
_______________ is heat transfer between locations by the movement of fluids (liquids or gases).
convection
___________________ currents may be observed when water is heated past its boiling point.
convection
As the __________ air sinks it pushes the __________ air up.
cool, warm
Warmer fluid rises, __________, and then sinks, forming convection currents.
cools
What does the movement create?
current, circle
How does radiation differ form conduction and convection?
doesn't need contact, it just happens
In heat transfer by radiation, the heat energy is transferred through space by _______________ waves.
electromagnetic
Heat is _________, so heat can do work. Heat keeps us warm. Heat makes engines warm and heat can affect____________
energy, molecules
What is convection?
is the movement of heat through liquids and gases
The hot air above the fire _________ up the chimney. (sure, natural convection, without chimney's wouldn't work)
rises
In this beaker, the water nearest flame becomes hot. It expands and becomes lighter(less dense) than the cooler water on top. As the cool water moves down, the hot water ______. This transfer of heat by currents in liquids or gases is called__________.
rises, convection
Describe a situation when conduction occurs:
when you turn the stove on to heat up a pan, the heat moves from the burner to the pan
The flow of energy from an object with a higher temperature to a lower temperature object will continue until both objects have reached thermal ________.
Equilibrium
What energy is the following: The sun causes water in a pond to evaporate.
Radiation
The energy of movement is ____________ energy.
Kinetic
The best form of heat is from the invisible variety. Like the kind that radiates from the _________.
Sun
________ energy always moves form ______ to _________ area
Thermal, warm, cold
_____________ in all matter are constantly moving.
atoms
How does a frozen ice sculpture have more heat energy than a match?
because it has more molecules, so It has more heat energy.
How does conduction occur?
heat moves form one solid to another solid, two things must be touching
__________ _______________ occurs through conduction, convection, and radiation.
heat transfer
Adding layers of _______ will slow rate of heat transfer, as when people wear several layers of clothing on a cold day.
insulation
As hot air (or water) rises it becomes ______________ ________________ than the surrounding fluid.
less dense
The mountains are icy but they've got motion of __________. Even cold things have heat. Anything with molecules has ___________. It's just that the molecules in cold things are moving more ____________ than the molecules in warm things.
molecules, heat slowly
It doesn't matter whether something feels cold or hot. If molecules are _______, heat's something all things got.
moving
_________ is the transfer of energy as electromagnetic ___________
radiation, waves
The ______ warms the Earth through the type of heat transfer called radiation.
sun
Name two objects that gives off radiation waves
sun rays, and campfires
The ________ warms the land and the land heats the air right above it. The air molecules get going __________ and faster and they move farther and _________ apart. Then the cool air comes in and pushes the warm air ______.
sun, faster, farther, up.
__________________ is the measure of all kinetic energy there is, the sample of a material. The more kinetic energy there is, the higher it is.
temperatures
What is radiation?
the transfer of energy through waves.
What must happen in order for conduction to take place?
two objects must be touching
The earth receives only about _____________ of these waves
two-billionths
The best heat sources are those that move hot air _____, like a fire or a warm tropical breeze. It's obvious, convection rules.
up
Heat is the hottest when it is conducted directly from one thing to another, like when you put a metal spoon into a bowl of hot soup. The spoon gets _________ from the conducted heat.
warm
When air molecules come into direct contact with a _______ surface, ________ energy is transferred to the atmosphere.
warm, thermal
The fire is radiating heat. Heat radiation is made up of ___________, just like light.
waves
Describe a situation where convection occurs:
when you boil water in a pot
