Heat Transfer
Which causes the movement of boiling water in a pot on the stove?
A. convection
B. evaporation
C. radiation
D. sublimation
A. convection
Sue is making pudding for her family. She mixes 490 g of cold milk with 90 g of pudding mix and then puts it in the refrigerator to solidify. About how many grams of pudding was made?
A. 90 g B. 190 g C. 400 g. D. 580 g
D. 580 g
Which is an example of a different substance being formed?
A. glass breaking
B. metal melting
C. water freezing
D. wood burning
D. wood burning
Which provides the energy for most life cycles on Earth?
A. sun
B. soil
C. clouds
D. animals
A. sun
Which is the best conductor of heat?
A. a glass tube
B. a copper wire
C. a piece of string
B. a copper wire
Steven placed an ice cream scoop under hot water before scooping ice cream. Which describes how the ice cream scoop was affected?
A. The ice cream scoop was cooled by convection.
B. The ice cream scoop was cooled by conduction.
C. The ice cream scoop was warmed by convection.
D. The ice cream scoop was warmed by conduction.
D. The ice cream scoop was warmed by conduction.
Bob puts 200 grams of ice into a pitcher with 900 grams of water. He gets distracted and comes back later to find that the ice has melted in the water. How many grams of water does Bob now have in the pitcher?
A. 200 g B. 700 g C. 900 g D. 1,100 g
D. 1,100 g
Jennifer left her bike outside, buried in snow. In the spring, when the snow melted, she found her bike covered in rust. Which best describes the change to the bike?
A. It was a chemical change, because the bike was a different color.
B. It was a chemical change, because the rubber tires were deflated.
C. It was a chemical change, because rust can be removed from the metal.
D. It was a chemical change, because rust is a new substance on the metal.
D. It was a chemical change, because rust is a new substance on the metal.
Which would most likely increase on a hot, sunny day?
A. runoff
B. condensation
C. transpiration
C. transpiration
Jack needs soft butter to make cookies. Which is the best place to leave the butter so that it will soften?
A. freezer
B. counter top
C. refrigerator
B. counter top
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?
A. convection
B. evaporation
C. radiation
D. conduction
A. convection
While working in the yard, John and his father trimmed a few trees and put the branches into a machine to create mulch for the yard. If they created 10 kg of mulch, which is most likely the weight of the branches they used?
A. 5 g
B. 10 kg
C. 15 kg
D. 20 kg
B. 10 kg
Water is boiled and water vapor forms. Which best describes this process?
A. A chemical change occurs because a completely new substance forms.
B. A chemical change occurs because the temperature of the water changes.
C. A physical change occurs because the water disappears as it is absorbed by air.
D. A physical change occurs because water and vapor are different states of the same substance.
D. A physical change occurs because water and vapor are different states of the same substance.
Which would most likely cause more runoff?
A. decrease in transpiration
B. increase in precipitation
C. decrease in precipitation
B. increase in precipitation
A metal wire is used in a light bulb to conduct heat until it glows. Which best explains why metal is used?
A. Metal heats up quickly.
B. Metal conducts sunlight.
C. Metal cools down slowly.
A. Metal heats up quickly.
People sitting around a campfire are able to feel the heat from the fire. How are the people able to feel the heat from the fire without touching the fire?
A. The heat from the fire travels through the ground and heats the ground around the people.
B. The heat from the fire is conducted through air molecules to the people.
C. The heat from the fire rises in the air and then settles around the people.
D. The heat from the fire radiates from the fire to the people.
D. The heat from the fire radiates from the fire to the people.
Sam built a rocket using a full set of blocks. How would taking the rocket apart effect the total mass of the blocks?
A. The total mass of the blocks would double.
B. The total mass of the blocks would be the same apart as together.
C. The total mass of the blocks would decrease because they are together.
D. The total mass of the blocks would increase because the blocks are apart.
B. The total mass of the blocks would be the same apart as together.
Which is the best example of a physical change?
A. ice melting
B. paper burning
C. fireworks exploding
D. leaves changing color
A. ice melting
Why is the sun’s energy necessary for the water cycle?
A. It is the heat source that turns water into vapor.
B. It is the light source that turns water into vapor.
C. It is the heat source that turns vapor into water droplets.
D. It is the light source that turns vapor into water droplets.
A. It is the heat source that turns water into vapor.
Which best explains why most pot handles are made of plastic?
A. Plastic conducts heat and stays cool.
B. Plastic does not conduct heat and stays cool.
C. Plastic does not radiate heat and warms up.
B. Plastic does not conduct heat and stays cool.
A cold metal spoon is placed in a bowl of hot soup. Which best describes how the spoon is affected?
A. The heat from the soup does not affect the temperature of the spoon.
B. The heat from the soup is conducted through the spoon, making the spoon warmer.
C. The cold air in the room radiates into the soup, cooling it, and keeping the spoon cool.
D. The cold from the spoon is conducted into the soup, causing the soup to cool to the same temperature as the spoon.
B.The heat from the soup is conducted through the spoon, making the spoon warmer.
Barb has a bucket of snow with a mass of 20 kg. After the snow melts, what will most likely be the mass of the bucket of water?
A. 15 kg B. 20 kg C. 35 kg D. 40 kg
B. 20 kg
Which best describes what happens when water condenses on a glass?
A. A physical change occurs, because the water changes form.
B. A physical change occurs, because the water changes color.
C. A chemical change occurs, because the water gives off light.
D. A chemical change occurs, because the water forms a new substance.
A. A physical change occurs, because the water changes form.
Which experiment would most resemble the complete water cycle?
A. watering plants
B. burning wet wood
C. water flowing from a faucet
D. boiling a pot of water with a lid on it
D. boiling a pot of water with a lid on it
Why should Ann leave space at the top of her plastic bottle when filling it with water and then freezing it overnight?
A. Water expands when frozen, so the water will need more space.
B. Water contracts when frozen, so the water will need more space.
C. Plastic contracts when frozen, so the water will need more space.
D. Plastic expands when frozen, so the water will need more space.
A. Water expands when frozen, so the water will need more space.