11-1 Heating and Cooling Matter

_________________________ is a measure of the average kinetic energy of the particles in a material.

• thermal
• friction
• temperature
• expansion

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The liquid in a thermometer ______________ as the temperature increases.

• expands
• disappears
• freezes
• explodes

Tags

NGSS.MS-PS1-4

An increase in the volume of a substance when the temperature increases is called ___________________________________.

• kinetic energy
• thermal expansion
• temperature
• heat

What happens to the molecules of a solid when it is heated?

• Slow down

• Speed up

• Don't change speed

• Shrink

Why does hot air rise compared to the surrounding air?

• It is less dense.
• It is more dense.
• It has the same density.

Why does matter expand when it is heated?

• Its particles get larger

• Its particles speed up and get further apart

Why does matter contract when it is cooled?

• Its particles get smaller

• Its particles slow down and get closer together

Which of the following is one of the RARE substances that actually expands when it turns from liquid to solid?

• iron

• wax

• water

• copper

What do expansion joints do?

• They cause structures to expand and contract with temperature changes.

• They allow structures to expand and contract without breaking or cracking.

Why it the second floor of a house often warmer than the first floor?

• The second floor is closer to the sun so it gets hotter.

• There are usually more heating vents on the second floor.

• Warm air is less dense than cold air so it goes up to the highest part of the house.

• Warm air is more dense than cold air so it goes up to the highest part of the house.