5.P.3.2 #1: Schoolnet (Heating & Cooling)

Which best explains why a metal ice cream scoop works more efficiently

than a plastic ice cream scoop when dipped in warm water prior to

scooping the ice cream?

• The metal heats more quickly than the plastic.

• The plastic heats more quickly than the metal.

• The metal insulates against heat.

• The plastic conducts heat.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-3

Why do asphalt streets often have cracks in them?

• because asphalt is a good conductor of heat

• because asphalt expands when heated and contracts when cooled

• because asphalt is an insulator that helps keep heat from escaping

• because asphalt contracts when heated and expands when cooled

Why does ice cream placed in a plastic cooler melt slower than ice cream

placed in a metal pot?

• because metal is a better insulator than plastic

• because plastic is a better insulator than metal

• because metal insulates against more heat

• because plastic conducts more heat

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-3

How do a wooden spoon and a metal spoon react when placed into a pot

of hot soup?

• Neither spoon gets hot because heat does not transfer through metal or wood.

• Both spoons will quickly become hot because heat transfers through

  all materials equally.

• The metal spoon gets hot sooner because heat transfers more easily through metal than wood.

• The wooden spoon gets hot sooner because heat transfers more easily through wood than metal.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-3

NGSS.MS-PS3-5

Which explains how most metals react to being heated?

• They become brittle.

• They contract.

• They expand.

• They break.

Tags

NGSS.MS-PS1-4

Which best explains why it is a bad idea to use metal chairs for a party

on a hot sunny day?

• The metal chairs melt slowly.

• The metal chairs remain cold.

• Metal chairs are very heavy.

• Metal chairs get hot quickly.

Tags

NGSS.MS-PS3-4

Yuko designed an experiment to test the effect of heating and cooling on air. She blew up two balloons to similar sizes and measured their circumferences. She placed one balloon in a freezer for one hour and left the second balloon on the table. After one hour she measured their circumferences again. She then left both balloons on the table for one more hour.

The graph below shows the change in the sizes of the balloons during the experiment. Which statement BEST explains the differences seen between the two balloons during the experiment?

• Air contracts when cooled but is not affected by warming.

• Cooling causes air to contract and heating causes air to expand.

• Balloons put more pressure on cold air than room temperature air.

• Freezing causes balloons to contract and thawing causes them expand.

Tags

NGSS.MS-PS1-4

Manuel was having trouble opening a new glass jar of pickles. His father told Manuel to hold the metal lid of the jar under running hot water for a few seconds, then try again. Then the lid opened easily.

What is the MOST likely reason Manuel’s father suggested using hot water to loosen the lid?

• Glass contracts when it is heated.

• Metals expand when they are heated.

• Metals are easier to grip when they are warm.

• Hot water reduces friction between metal and glass.

Tags

NGSS.MS-PS3-3

Tommy wanted to know what would happen if he cooled and heated different materials in the kitchen. He weighed out equal masses of water, salt, oil, and butter. He recorded the beginning properties of each material. Tommy placed one set of samples in a freezer for one

hour. He placed the other samples on a hot plate over low heat for five minutes. He recorded his observations in the table.

Which conclusion did Tommy MOST likely draw about the effects of heating and cooling on different materials?

• Heating and cooling only change the properties of liquids.

• Heating and cooling have the same effects on all materials.

• Heating and cooling never affect the state of matter of solids.

• Heating and cooling affect different materials in different ways.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

Uneven heating of Earth causes convection currents.

What part of this process is being demonstrated in this diagram?

• Heat causes gases to expand.

• Heat causes gases to contract.

• As air cools, currents flow clockwise.

• As air cools, currents flow counterclockwise.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6