Science Test (Study Guide) for Unit 8

Carol orders some hot chocolate at a fast food restaurant. The cup is very hot. Which material would be best to wrap around the cup to prevent her hand from getting too hot?

• foam

• paper

• plastic wrap

• aluminum foil

Amrit and his friends are building a playhouse in his backyard. Which material would best keep heat in during winter and keep heat out during summer?

• aluminum

• copper

• steel

• wood

Oki’s house gets very cold on winter nights. She has one thin blanket on her bed. Which claim describes what she could do to stay warmer at night?

• Add another thin blanket.

• Use two fluffy blankets instead.

• Add a fluffy blanket onto the thin blanket.

• Use a fluffy blanket instead of the thin blanket.

The lunchbox that Jordan takes to school has soft, thick sides as shown in the picture below. Which material in the sides of the lunchbox best keeps the food warm that Jordan takes to school?

• air

• foil

• paper

• plastic

Carl and his family went on a picnic. It was a hot day, and the sun was shining on the table where they put their things. Carl put a book on the table and covered it before going off to play. After an hour, he came back and was surprised to find that the book was not warm. Which material most likely covered the book?

• foam

• metal

• paper

• plastic

Lisa stirs some hot, apple cider with a metal spoon. Which sentence explains what happens to the spoon?

• Heat from the hot liquid will warm the spoon until the spoon is hotter than the liquid.

• Heat from the hot liquid will warm the spoon until they are both the same temperature.

• Heat from the hot liquid will warm the spoon, but the liquid will remain hotter than the spoon.

• Heat from the hot liquid will not have any effect on a metal spoon, so the spoon will remain cool.

Ossi knows that convection is the transfer of heat energy. Which transfer of heat energy is made through convection?

• A gas burner heats water.

• The sun warms a person.

• A hand warms an ice cube.

• An electric burner heats a pot.

On a sunny day, Yolanda fills a small backyard pool with water. As time passes, the water warms. Which reasoning explains the evidence?

• The sun heats the water through gravity.

• The sun heats the water through radiation.

• The sun heats the water through convection.

• The sun heats the water through conduction.

Devon writes a summary of a lesson about heat. Which statement should Devon include in her summary?

• Heat always moves from cold objects to warm objects.

• Heat is transferred only by the radiant energy of the sun.

• Heat is a measure of the hotness or coldness of an object.

• Heat is the transfer of energy between objects of different temperatures.

As it gets warmer, the liquid inside a thermometer rises. What reasoning explains why this happens?

• The liquid expands.

• The liquid changes color.

• The liquid changes into a solid.

• The liquid begins to evaporate.