Heat and Cooling
Billy has a ring and a metal ball. Billy places the metal ball through the ring and it fits. Then billy heats up the metal ball. Then he tried to place the ball through the ring again but it did not fit. Why didn't the ball fit anymore?
A. The ball contracted when cooled down
B. The ball expanded when cooled down
C. The ball contracted when heated up
D. The ball expanded when heated up
D. The ball expanded when heated up
When water reaches their melting points it becomes what?
A. It stays a liquid
B. It becomes a solid
C. It turns to a gas
C. It turns to gas
John was making a science project with water and baking soda.What change would happen when he mixes it?
A. Chemical change
B. Physical change
A. Chemical change
Which of the following is an example of an insulator?
A. Wooden block
B. Nail
C. Penny
D. Paper clip
A. Wooden block
What best describes a balanced force?
A. Object continues moving at the same speed and in the same direction
B. Object does not continue to move at the same speed and not the same direction
A. Object continues moving at the same speed and in the same direction
How can students use what they have learned during their experiments to open a tight metal lid on a glass jar?
A. Strike the lid with a hammer
B. Run the lid under hot water
C. Use ice to cool the lid
D. Twist the lid in the opposite direction
B. Run the lid under hot water
The process by which a liquid changes to a gas is called?
A. Evaporation
B. Precipitation
C. Condensation
D. Run-off
A. Evaporation
Which is an example of chemical change?
A. Water freezes
B. Wood is cut
C. Bread is baked
D. Wire is bent
C. Bread is baked
Materials like rubber and plastic are examples of conductors because they allow heat to move freely. True or False?
A. True
B. False
B. False
Which one is Newton's third law?
A. The stronger the force on an object the faster it will speed up
B. For every action there is an equal and opposite reaction
C. object at rest will remain at rest unless acted upon a force
B. For every action there is an equal and opposite reaction
Heat transfer from ___ to ___ ?
A. Hot, cold
B. Cold, hot
A. Hot, cold
Solid, liquid, and gas are three?
A. Close together
B. Regular pattern
C. States of matter
D. No spaces between the pattern
C. States of matter
Which is an example of a physical change?
A. Metal rusting
B. Water boiling
C. Paper burning
B. Water boiling
Jack is trying to keep his cold drink cool but does not know what material to use. What material should jack use to keep his drink cool?
A. metal
B. plastic
C. copper
D. steel
B. plastic
John dropped a rock and a brick, which one fall to the ground first?
A. Brick
B. Rock
C. Both
C. Both
The process of removing heat is called?
A. Removing
B. Heating
C. Baking
D. Cooling
D. Cooling
What is mass?
A. A force that pulls objects to the center of the earth
B. A force that slows objects down
C. How much something is made of
C. How much something is made of
Two solutions are added together and the new solution becomes hot. This tells you that
A. a gas is being produced
B. the solutions are heated
C. the physical properties are the same.
D. a chemical change is taking place.
D. a chemical change is taking place
Which is TRUE about an insulator?
A. It can be a good conductor
B. It allows heat to pass through easily
C. It slows heat transfer
D. It gives heat to the objects
C. It slows energy transfer
Friction is a force that always?
A. Slows an object down
B. Speeds objects up
A. Slows an object down
What happens when you heat metal?
A. It contracts
B. It expands
B. It expands
What is the strongest state of matter?
A. Liquid
B. Gas
C. Solid
C. Solid
Which of the following is a common sign that a chemical change has occurred?
A. A chemical has changed size.
B. A chemical has changed to a different state (solid, liquid or gas)
C. A chemical has become reversible
D. A chemical has turned to an unexpected color
D. A chemical has turned to an unexpected color
What answer describes conductors?
A. Conductors are typically made of rubber plastic.
B. Conductors allow heat to move through easily
C. Conductors don't let heat transfer fast
B. Conductors allow heat to move through easily
The law of inertia applies to?
A. objects at rest
B. moving objects
C. both moving and non-moving objects
C. both moving and non-moving objects