Convection is heat transfer by-

The heating and cooling of a fluid

Mittens help keep your hands warm in winter because:

They are conductors of electrical energy.

What is the difference between a conductor and an insulator?

A conductor allows electricity to flow through it easily and an insulator does not.

An insulator allows electricity to flow through it easily and a conductor does not

An insulator is magnetic and a conductor is not

A conductor is magnetic and an insulator is not

Choose the BEST example of convection:

Heat leaves a coffee cup as the currents of steam and air rise.

Heat leaves the hot soup and heats the spoon.

Heat from a liquid melts an ice cube.

Water droplets form on the outside of a glass of water.

Heat energy transfer is:

the transfer of heat from one object to another.

the radiation of heat from an object.

What is the original source of most of the energy that people use?

By radiation from the Earth's core.

Which best explains how roasting marshmallows happens?

Heat from the fire is radiated into the marshmallow.

Heat from the fire is conducted into the marshmallow.

The coolness of the marshmallow is conducted into the fire.

The coolness of the marshmallow is radiated into the fire.

Which best describes heat transfer by radiation?

Cooking a hotdog in a microwave.

A slice of bacon frying in a pan.

A pot on a stove boiling water.

Why should space be left at the top of a plastic bottle when filling with water and then freezing?

Because water expands when frozen.

Because water contracts when frozen.

Because plastic contracts when frozen.

Because plastic expands when frozen.

Which best explains why there are gaps between the concrete sidewalks?

When it's hot the gaps allow expanding without cracking.

When it's cold the gaps allow expanding without cracking.

When it's cold the gaps allow contracting without cracking.

When it's hot the gaps allow contracting without cracking.

Conduction can only occur between two objects when –

both objects are in physical contact with each other.

one object is less dense than the other.

one of the objects is made of a metal.

both objects are exactly the same temperature.

Which sample has the higher temperature?

Sample A because the molecules are moving faster and have more average kinetic energy

Sample B because it has more thermal energy and more molecules

Sample B because the molecules are brown

Sample A because yellow is such a hot color

How do you increase the kinetic energy of molecules?

expand the molecules and increase the density

Thermal Energy Review

Quiz

•

Science

•

7th - 8th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS1-4, MS-PS3-4, MS-PS3-3

+8

Standards-aligned

Rhiannon Gazza

Used 153+ times

FREE Resource

50 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What type of energy increases as molecules move faster?

mechanical energy

electrical energy

thermal energy

sound energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

How does heat always transfer?

from cold to hot

from hot to cold

from liquid to solid

from gas to liquid

Tags

NGSS.MS-PS1-4

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What type of heat transfer does this picture represent? (pot touching burner)

radiation

conduction

convection

sunshine

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What kind of heat transfer does this picture represent?

chocolate chip cookies

radiation

conduction

convection

Tags

NGSS.MS-PS1-4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of heat transfer does this picture represent?

radiation

conduction

convection

sunburns

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What type of heat transfer does this picture represent?

radiation

conduction

convection

hot air balloons

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Conduction is heat transfer by -

Touch

Circles

Waves

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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Thermal Energy Review

50 questions

What type of energy increases as molecules move faster?

How does heat always transfer?

What type of heat transfer does this picture represent? (pot touching burner)

What kind of heat transfer does this picture represent?

What type of heat transfer does this picture represent?

What type of heat transfer does this picture represent?

Conduction is heat transfer by -

Convection is heat transfer by-

Warm air rises and the cool air sinks demonstrates this type of heat transfer.

The heat from a hot burner to a pot is transferred by ______.

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