Heat Review

What is a result of 2 things being rubbed together?

• gravity

• pull

• push

• friction

Why does the ice cube melt?

• cold moves from ice to hand

• cold moved from hand to ice

• heat moves from ice to hand

• heat moves from hand to ice

What is an example of a force producing heat?

• dropping a book off your desk

• a light coming on when a switch is flipped

• a cars wheels skidding across pavement as it stops

• throwing a ball to a friend

Why can steam be used to cook food?

• steam is water vapor

• steam can transfer heat to cooler objects

• steam can move through small places

• steam can evaporate

You are boiling water and cooking pasta. How does heat flow to the pasta?

• Heat source (burner) to pasta

• Heat source (burner) to water to pasta

• Heat source (burner) to pot to water to pasta

• Heat source (burner) to water to pot to pasta

Why do 2 objects get warm when rubbed together?

• energy is absorbed from the air

• sound energy is produced

• energy decreases

• friction cause heat energy

Why does water placed in the freezer turn to ice?

• cold moved from the water to the air

• heat moved from the air to the water

• cold moved from the air to the water

• heat moved from the water to the air

Lisa pushed a stack of books across the floor. She noticed the bottom cover of the last book felt warm. What is the reason it felt warm?

• The book absorbed heat from the floor

• Friction between the book and the floor made it warm.

• The floor was cooler than the books and heat transferred the cover.

• The heat from the lights warmed the book.

Friction is....

• a solid

• a gas

• a force

• a pull

Tyler placed a spoon in his soup. At first the spoon was cool. A little later it was warm. Why?

• heat transferred from the spoon to the soup

• heat transferred from the bowl to the spoon

• heat transferred from the soup to the spoon

• heat transferred from the air to the spoon