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WorksheetsHeat Transfer
Total questions: 109
Worksheet time: 55mins
Anya placed an ice cube on the sidewalk on a warm day. The ice cube soon melted to form a puddle. What process caused the ice cube to melt?
Heat transferred through the ice cube by convection.
Heat transferred from the air to the ice cube by radiation.
Heat transferred from the air and the pavement by conduction.
Heat transferred through the ice cube into the pavement by conduction.
Which best describes how heat changes the state of a substance?
Heat destroys the molecules in a substance.
Heat steals the molecules from cold substances.
Heat absorbs the molecules of a substance and releases them once they cool.
Heat causes the molecules of a substance to spread out into a new arrangement.
Which would make the best roof material for a miniature solar oven used to cook meat?
cement
glass
paper
wood
Which part of the diagram shows conduction?
Part A
Part B
Part C
Which best describes heat transfer by radiation?
a slice of bacon frying in a pan
a pot on a stove boiling water
a camp fire warming hands
a hot air balloon
Which best explains how bacon is fried on a stove burner?
The bacon creates a convection current, the heat rises to the pan, and then rises to the stove burner.
The bacon transfers heat directly to the pan, and the pan transfers heat directly to the stove burner.
The stove burner radiates heat to the pan, and the pan radiates heat to the bacon.
The stove burner transfers heat directly to the pan, and the pan directly transfers heat to the bacon.
Jackson likes to cook but is always in a hurry. He needs a pot that will cook his food quickly. Which is the best material for his cooking pot?
copper
glass
plastic
wood
Tom puts a metallic cover over his car’s windshield after parking. How does this control the sun’s rays during a sunny day?
It prevents heat energy from leaving the car.
It controls the temperature by providing shade.
It reflects the sun’s rays away from the windshield.
It absorbs heat in the windshield protector and cools the car.
Emma fills a wooden box and a plastic container of the same size and thickness with equal amounts of ice. She wants to determine which material will keep the ice frozen the longest. Which best explains the results of her experiment?
The plastic container works best because plastic is a good insulator from heat.
The plastic container works best because plastic is a good conductor of heat.
The wooden box works best because wood is a good insulator from heat.
The wooden box works best because wood is a good conductor of heat.
Ceramic materials do not melt easily. Whichbest describes a practical use for ceramics that takes advantage of this characteristic?
an ice cube tray
a statue in a garden
pottery in a museum
tiles on the outside of a space shuttle
Which best explains how convected heat causes a hot air balloon to stay in the air?
The heat is falling and replacing cooler air.
The heat is produced from the rising of air currents.
The heat is absorbed through the balloon from the sun.
The heat is rising and circulating, causing the balloon to stay up in the air.
Miguel is packing popsicles for a picnic. In which type of container would it be best for Miguel to store his popsicles?
aluminum
copper
paper
plastic
Which best explains why a refrigerator is usually not made completely out of metal?
Metal will not transfer heat, which allows the refrigerator to remain cool.
Metal easily transfers heat, which would warm the inside of the refrigerator.
Metal would heat up quickly on the outside, making the door too hot to touch.
Metal cools quickly, causing the refrigerator to be too cold and freeze the food inside.
Although the heat source is at the bottom of the beaker, all of the water is the same temperature.
What keeps the water at the top of the beaker the same temperature as that of the bottom?
Heat from the burner radiates through the liquid and causes even heating.
Evaporation heats the water at the top and the flame heats the water at the bottom.
The walls of the beaker reflect heat toward the center, so the water heats evenly.
Heated water molecules and steam rise in the beaker, carrying heat by convection.
Bill stands in a swimming pool and notices that the water around his feet is a lot cooler than the water near the surface. Which process causes this difference in temperature?
convection
evaporation
radiation
conduction
Which is an example of heat being transferred by conduction?
a furnace heating the air in a school
an ice cube melting in a person’s hand
a pot of water on a stove boiling
the sun heating water in a swimming pool
In what way is roasting a hot dog over a fire an example of the transfer of heat that occurs during radiation?
Heat circulates from the bottom of the fire up.
The fire touches the hot dog directly and cooks it.
Electricity from the fire is transferred to the hot dog.
The heat from the fire is transferred to the hot dog to warm it.
A girl is heating soup. As she stirs the soup with a metal spoon, the spoon becomes hot and burns her hand. Why does the spoon burn the girl’s hand?
The heat from the soup is radiated through the spoon.
The heat from the soup is conducted through the spoon.
The warmth of the girl’s hand is radiated into the spoon.
The warmth of the girl’s hand is conducted into the spoon.
Joe is spreading butter on a piece of toast. Which type of butter would Joe most likelyuse?
butter from the oven
butter from the freezer
butter from the counter top
butter from the refrigerator
How does heat energy from the Sun reach Earth?
radiation
solar wind
conduction
convection
Which best describes the purpose of the metal coils inside an oven?
Metal heats easily, allowing for food to be cooked.
Metal cools quickly, allowing for food to cool down.
Metal absorbs heat from the food, which cools food down once it is cooked.
Metal absorbs heat from the food, which keeps the food warm once it is cooked.
Raul is packing a cooler for a hot day at the beach. Which type of cooler should he select to keep his food as cold as possible?
black plastic cooler
black fabric cooler
white metal cooler
white foam cooler
Eric sells ice cream at his mom’s yard sale, but he notices that the ice cream melts too fast. Which is the best way to slow the melting?
Place the ice cream in the sun.
Place the ice cream in a cooler.
Place the ice cream near a fan.
Place the ice cream under a tent.
A metal wire is used in a light bulb to conduct heat until it glows. Which best explains why metal is used?
Metal heats up quickly.
Metal conducts sunlight.
Metal cools down slowly.
Alex is using a plastic material that resists heating up. Which is Alex most likely creating?
a handle for a pan, because it will keep a person’s hand from burning
a stove, because it uses materials that need to heat to high temperatures
a light bulb, because it uses electricity to heat the inside wire and create light
a toaster, because the coils inside a toaster need to radiate heat to warm the food
Which best explains how candle wax is shaped into a mold?
Heat is added to candle wax to melt it so it is more flexible and can take the shape of the mold.
Heat is added to candle wax to melt it so it is less flexible and can take the shape of the mold.
Cold is taken away from candle wax so it is more flexible and can take the shape of the mold.
Cold is taken away from candle wax so it is less flexible and can take the shape of the mold.
A pot is heated on a stove. Which process causes the metal handle of the pot to also become hot?
combustion
convection
radiation
conduction
An engineer can choose from four different materials to make a heat-resistant handle for a stirring spoon. Which material is LEAST likely to get hot when the spoon is placed in boiling water?
ceramic
wood
glass
iron
Which is the best example of heat transfer by radiation?
cooling off in a pool on a hot day
burning your hand on a hot stove
getting warm by sitting near a campfire
melting ice by dropping it into boiling water
Sara wants to keep drinks cold during an afternoon sports game. Which container would most likely keep her drinks cold for several hours?
metal, because it will conduct heat
plastic, because it will conduct heat
metal, because it will insulate from heat
plastic, because it will insulate from heat
Which is the best example of radiation?
warming hot dogs over a fire
boiling water on a stove-top burner
burning a piece of paper with a candle flame
Which is an example of radiation?
warming food in the microwave
warming food on the stove
cooling food in the freezer
Which material will most likely melt the quickest when heated on a stove?
iron
wood
glass
butter
Joe wants to slide down on a sunny day, but the slide is too hot. Which is most likely the reason for the slide being hot?
radiation from the sun
convection from the sun
conduction from the sun
transpiration from the sun
Jill notices that her skin gets burned when she sits out in the sun. What best explains why this happens?
The soil is convecting heat into the air.
The heat from the sun is being conducted to the Earth.
The heat from the sun is radiating down to Earth’s surface.
Sam is conducting a science experiment. He pours the same amount of 50°F water into four different types of containers of same size and thickness. Which material will best keep the water cold?
copper
glass
paper
plastic
Which best describes how heat is transferred?
Heat only flows within individual substances.
Heat flows from a warmer substance to a cooler substance.
Heat flows from a cooler substance to a warmer substance.
Heat flows in many different directions between substances.
Which shows an example of convection?
Jose cooks an egg in a pot of boiling water.
Clara burns her hand by touching a light bulb.
Lucy wraps herself in an electric blanket to keep warm.
Ben holds the end of a metal rod in fire to cook hot dogs.
Plastic does not conduct heat like many metals. Which product made from plasticbest takes advantage of this characteristic?
a table
a cooler
a bucket
a hairbrush
Which best explains why most pot handles are made of plastic?
Plastic conducts heat and stays cool.
Plastic does not conduct heat and stays cool.
Plastic does not radiate heat and warms up.
A family living on the top floor of a tall building complains that their home gets too hot during the day. Which could they add to the roof to allow their home to stay cooler?
black metal
white metal
black rubber
white rubber
What happens to metal railroad tracks during the heat of a summer day?
decrease in weight
increase in weight
decrease in length
increase in length
Which best explains why a full glass bottle of water should not be stored in a freezer?
The temperature of the freezer will make the water too cold.
Water expands when it freezes, which could break the bottle.
Water contracts when it freezes, which could break the bottle.
The temperature of the freezer will not make the water cold enough.
Which best describes the process of conduction?
When two objects touch, the heat is transferred into the air.
When two objects touch, the heat from the hotter object is transferred to the cooler object.
When two objects touch, the cool air from the cooler object is transferred to the hotter object.
Glass does not melt easily. Which is the best example of a practical use for glass that takes advantage of this characteristic?
a candle in a glass container
a car windshield made of glass
a greenhouse made of glass
a house door made of glass
Which best describes a material that would be used to insulate a house?
excellent conductor of heat
excellent conductor of cold
poor conductor of heat
poor conductor of cold
Which best explains how ice melts in a person’s hand?
The heat from a person’s hand transfers by radiation to the ice, causing it to melt.
The heat from a person’s hand transfers by conduction to the ice, causing it to melt.
The cool temperature of the ice transfers by radiation to a person’s hand, cooling it off.
The cool temperature of the ice transfers by conduction to a person’s hand, cooling it off.
Which describes what can happen as a result of radiation?
A piece of wood burns in a fire.
A shirt is hot after having been ironed.
A can of soup is heated in a pot on a stove.
A car’s inside temperature rises to over 100 degrees on a sunny day.
Molly notices hot sparks rising from a campfire. She knows the sparks are hot, because they are red. Which best explains the hot sparks rising?
The sparks are rising due to radiated heat.
The sparks are rising due to heat being conducted.
The sparks are rising, and heat rises, proving this is convection.
The sparks are rising to replace warm air, so the sparks are convecting heat.
Which is an example of radiation?
boiling a pot of noodles for dinner
getting hot from lying in the sun
feeling warm while taking a hot shower
burning yourself after touching a hot plate
Which is an example of heat transfer by convection?
a glowing light bulb
heating the atmosphere
cooking using a microwave oven
heating a piece of metal in a flame
Which best explains why the handles of many cooking pans are made of plastic?
Plastic melts easily.
Plastic freezes easily.
Plastic is a poor conductor of heat.
Plastic is a good conductor of heat.
Which of the materials would be the best conductor of heat?
plastic
metal
stone
wood
An unlit candle was laid on a table directly in front of a hot fireplace. Which most likely explains why the candle melted?
Heat energy from the fire was radiated through the air into the candle.
Heat energy from the fire was conducted through the table into the candle.
Heat energy from the fire was radiated through the floor into the candle.
Heat energy from the fire was conducted through the air into the candle.
Which statement best describes how winter weather can damage roads?
Snow and ice can cause car accidents, which damage roads.
Rain, ice, and snow can cause the painted lines on roads to fade.
Cold temperatures can cause road materials to expand, creating potholes.
Water can get into cracks in roads, then freeze and expand, making the cracks worse.
When Julie was cooking macaroni she noticed that it would rise to the top of the boiling water and then sink back to the bottom of the pot. This is most likely because
The convection of heat within the water was creating a current.
The convection of air around the pot was creating a current.
The conduction of heat within the water was creating a current.
The conduction of air around the pot was creating a current.
A cooler made from which materials would be best to use to keep food cold?
plastic
paper
wood
Which would be the best way to change a solid to a liquid?
freeze it
heat it
freeze it, then heat it
heat it, then freeze it
Sue is building a bike with a metal frame in a warm, sunny area. Which material would be best for Sue to use for the grips on the handlebars so that her hands do not get too hot?
silver metal, because silver reflects heat, and metal conducts heat
black metal, because black absorbs heat from the sun, and metal does not conduct heat
white rubber, because white reflects heat, and the rubber does not heat up quickly
black rubber, because black reflects heat from the sun, and rubber does not conduct heat
Which best describes the transfer of heat due to the movement of gases or liquids?
radiation
convection
evaporation
condensation
Jordan places a hot spoon into a container of ice cream. How does this help him scoop out the ice cream?
The coolness from the ice cream is conducted to the spoon making it easier to scoop out.
The coolness from the ice cream is radiated to the spoon making it easier to scoop out.
The warmth of the spoon is conducted to the ice cream making it easier to scoop out.
The warmth of the spoon is radiated to the ice cream making it easier to scoop out.
The heat from the lamp allows this lizard to remain warm. This is an example of which type of heat transfer?
radiation
convection
conduction
Which would most likely turn gas into a liquid?
cooling
boiling
warming
freezing
Which best explains why there are gaps between the concrete sidewalks?
When temperatures get cold, the gaps allow the concrete to expand without cracking.
When temperatures get hot, the gaps allow the concrete to expand without cracking.
When temperatures get cold, the gaps allow the concrete to contract without cracking.
When temperatures get hot, the gaps allow the concrete to contract without cracking.
Which material would be best to use when creating a cup that keeps liquid hot?
aluminum
ceramic
metal
steel
Why does an ice cube melt when dropped into hot liquid?
The liquid absorbs heat from the ice.
Heat from the liquid transfers to the ice.
Heat from the ice transfers to the liquid.
Cold from the ice transfers into the liquid.
Which material would be the best choice for a cooking tool to be used when grilling food over a fire?
plastic
metal
paper
wood
Which statement best explains why engineers leave space between sections when building a bridge?
A bridge without spaces will expand during a hot day and possibly crack.
A bridge without spaces will expand during a cold day and possibly crack.
A bridge without spaces will contract during a hot day and possibly crack.
A bridge without spaces will contract during a cold day and possibly crack.
Which characteristic of wax makes it a good choice for making candles?
It is moist.
It burns yellow.
It melts easily.
It is lightweight.
Tires for cars, bicycles and lawn mowers are made of rubber. Which best explains why tires are made of rubber?
Rubber can be dyed many different colors.
Rubber can withstand heat caused by friction.
Rubber can be molded into many different shapes.
Which is the best example of convection?
a camp fire
a light bulb
a hot air balloon
a microwave oven
Which is a true statement about heating and cooling water?
Boiling and freezing water both take an hour.
It takes less time to boil water than to freeze water into ice.
It takes less time to freeze water into ice than to boil water.
It takes the same time to boil water as it does to freeze water into ice.
Which is an example of conduction?
Steam is rising from a cup of hot coffee.
A hot biscuit is warming the plate it is on.
The sun is shining through a window and warming a table.
A small ice cube at a temperature of 0°C is dropped into a glass of water at 28°C and melts. What is the temperature of the water in the glass just after the ice cube melts?
0°C
between 0°C and 28°C
28°C
greater than 28°C
How does heat energy from the sun reach Earth?
conduction
convection
insulation
radiation
Jim wakes up early in the morning and walks from his carpeted bedroom to the tiled kitchen. Which best describes why, despite being the same temperature, the tile floor feels cooler to his feet than the carpet?
Tile is a poor conductor of heat and transfers heat to his skin.
Carpet is a bad conductor of heat and transfers heat to his skin.
Tile is a better conductor of heat and transfers heat away from his skin.
Jim wakes up early in the morning and walks from his carpeted bedroom to the tiled kitchen. Which best describes why, despite being the same temperature, the tile floor feels cooler to his feet than the carpet?
Tile is a poor conductor of heat and transfers heat to his skin.
Carpet is a bad conductor of heat and transfers heat to his skin.
Tile is a better conductor of heat and transfers heat away from his skin.
Which best explains why metal is a good material to make frying pans?
Metal is a good conductor of heat and transfers heat from the stove to the food.
Metal is a good conductor of heat and does not transfer heat from the stove to the food.
Metal is a poor conductor of heat and transfers heat from the stove to the food.
Metal is a poor conductor of heat and does not transfer heat from the stove to the food.
Rays from the sun are shining down on a house, as shown in the illustration. What effect does the sun have on the temperature of the house?
The temperature of the house increases because heat radiates from the sun.
The temperature of the house increases because heat is conducted by the sun.
The temperature of the house decreases because heat is convected by the sun.
The temperature of the house decreases because the sun absorbs heat from the house.
A pot of water is placed on a stove. The water begins to boil rapidly. Which explains why the water is boiling faster?
The cooler water is rising in the pot to replace the warmer water on top through the process of radiation.
The warm water is rising in the pot to replace the cooler water on top through the process of radiation.
The warm water is rising in the pot to replace the cooler water on top through the process of convection.
The cooler water is rising in the pot to replace the warmer water on top through the process of convection.
Tina is boiling water in a metal pot for a weather experiment. What is most likely the reason she would need to use a pot holder for moving the metal pot?
Radiation causes the pot to be hot.
Conduction causes the pot to be hot.
Convection causes the pot to be hot.
Transpiration causes the pot to be hot.
Why would aluminum foil be a good choice to wrap food that needs to be kept cool outside?
The properties of the foil absorb the heat out of the food.
The properties of the foil reflect the temperature of the food back on itself.
The shiny surface of the foil reflects the heat of the sun and helps to keep some heat out.
The shiny surface of the foil absorbs the heat of the sun but keeps it away from the food.
A boy touches a stove and gets burned. What transfer of heat caused his hand to get burned?
radiation
conduction
convection
combustion
Which best describes the flow of heat?
from a larger object to a smaller object
from a warmer object to a cooler object
from a cooler object to a warmer object
Why are fireplaces typically made of either brick or metal?
Brick and metal are unaffected by heat.
Brick and metal will remain cool during a fire.
Brick and metal are able to withstand high heat.
Brick and metal are able to cool quickly when the fire is out.
Which best explains why a freezer would be made out of thick plastic?
to keep the cool air from escaping
to conduct cool air into the freezer
to heat the contents of the freezer
A dark-colored wall becomes warm when the sun shines on it. After sunset, a person standing a meter away can feel warmth from the wall. How does heat transfer from the wall to the person?
radiation
conduction
convection
insulation
Which is the best conductor of heat?
a glass tube
a copper wire
a piece of string
Alex and Jade are conducting an experiment to measure how the sun affects the evaporation of water. Alex places 50mL of water in the shade. Jade places 50mL of water in direct sunlight. What will the students most likely observe?
The water in the sun will be warmer, causing the water to evaporate more quickly.
The water in the shade will be cooler, causing the water to evaporate more quickly.
The water in the shade will be warmer, causing the water to evaporate more slowly.
The water in the sun will be cooler, causing the water to evaporate more slowly.
Which best explains why a hot air balloon rises into the air?
As the air is cooled, it becomes more dense and the balloon rises.
As the air is cooled, it becomes less dense and the balloon rises.
As the air is heated, it becomes less dense and the balloon rises.
In art class, the students watch a video about creating glass art. Which statement best describes how glass is shaped into a vase?
Glass is melted and is more flexible to shape.
Glass is frozen and is more flexible to shape.
Glass is melted and is less flexible to shape.
Glass is frozen and is less flexible to shape.
How is heat transferred when boiling a pot of water on the stove?
conduction
convection
combustion
radiation
A student places a cup of cold water on a counter in a hot room. After a short time, the student notices that the water in the cup is no longer cold. Which best explains why the water in the cup is no longer cold?
The coldness of the water transferred to the air, making the water in the cup warmer.
The coldness of the water was conducted to the cup, making the water in the cup warmer.
The heat from the air transferred to the water in the cup, making the water in the cup warmer.
The heat from the air caused the cold water in the cup to condense, making the water warmer.
Which best explains what happens to most materials when they are heated?
They expand.
They contract.
They change color.
They double in size.
The graphic below shows a greenhouse in Raleigh, North Carolina during the winter.
Which best explains why the temperature inside the greenhouse is higher than the temperature outside the greenhouse?
The sun’s rays radiate heat into the greenhouse, and then the warmed air is convected inside the greenhouse.
The sun’s rays conduct heat into the greenhouse, and then the warmed air is radiated inside the greenhouse.
The warm air outside passes into the greenhouse by convection, and then the warm air is conducted inside the greenhouse.
The cool air outside passes into the greenhouse by radiation, and then the cool air is conducted inside the greenhouse.
A student fills a bicycle tire with air on a very hot day. The next day, the temperature drops and it is much cooler. The student notices that the bicycle tire is almost flat. What best explains why the tire is flat?
The cooler temperature caused the air in the tire to contract, making the tire appear flat.
The cooler temperature caused the air in the tire to expand, which put a hole in the tire, causing it to go flat.
The cooler temperature caused the air in the tire to freeze, making the tire flat.
The cooler temperature caused the metal part of the bicycle to expand, putting a hole in the tire and making it go flat.
Which best explains why a blacksmith must heat iron before shaping it?
Heating iron makes it softer.
Heating iron makes it harder.
Heating iron changes its color.
Heating iron changes its texture.
How is heat transferred in radiation?
through solids
through liquids
through time
through air
Which color reflects heat radiation the best?
red
blue
white
Handles on metal pans are often coated with plastic. What is the most likely reason for this?
Plastic is a good conductor of heat.
Metal is a poor conductor of heat.
Plastic is a poor conductor of heat.
Metal and plastic are good conductors of heat.
Which organism most directly converts the sun’s radiation into energy it can use?
grass
snake
human
mushroom
Most oils do not freeze at normal winter temperatures. Which is the best example of a practical use for oil that has this characteristic?
baby oil
olive oil
motor oil
tanning oil
This illustration shows how heat can move through the atmosphere as air circulates.
What causes the circulation of air?
Air in the atmosphere is heated by the Sun and sinks to the ground.
The ground is heated by the Sun and then heats the air, causing the air to rise.
Air loses heat to the ground and then rises upward to obtain more energy.
The Sun heats the clouds which forces the cooler air to move away and sink.
Popcorn is made from corn kernels. What occurs when kernels are heated in a microwave?
The kernels expand.
The kernels dissolve.
The kernels become hard and brittle.
The kernels stick together to form a ball.
James measured the temperature outside his house everyday for 2 months. He observed that on days the sky was mostly cloudy, the temperature was an average of 9 degrees cooler than days the sky was mostly sunny. Which best describes the reason for this pattern?
The clouds blocked radiation from the sun, causing cooler temperatures.
The clouds blocked conduction from the sun, causing cooler temperatures.
The clouds allowed more radiation from the sun to reach the Earth’s surface.
The clouds allowed more conduction from the sun to reach the Earth’s surface.
It was very sunny outside, and Mike wanted to wear a shirt that would keep him cool. Which color shirt would be best for Mike to wear?
black
white
brown
Billy’s mom is having a hard time opening a jar of jelly. Billy tells his mom to hold the jar lid under water for a short period of time. Which best explains the water temperature Billy’s mom should use and why this would help?
Hot water warms the lid and causes it to contract, making it easier to open.
Hot water warms the lid and causes it to expand, making it easier to open.
Cold water cools the lid and causes it to contract, making it easier to open.
Cold water cools the lid and causes it to expand, making it easier to open.
Which best explains why many car motor parts are made from metal instead of plastic?
Metal can withstand heat better than most plastics.
Plastic is more expensive than metal.
Plastic is less flexible than metal.
Michelle wants to roast marshmallows over a fire. Which best explains how this process happens?
The warmth of the fire is conducted into the marshmallow.
The warmth of the fire is radiated into the marshmallow.
The coolness of the marshmallow is conducted into the fire.
The coolness of the marshmallow is radiated into the fire.
