Question 1

The transfer of thermal energy by the vibration of molecules is...

Accepted Answer

thermal conduction

Answer

thermal insulator

Answer

thermal conductor

Question 2

The substance that conducts thermal energy is...

Accepted Answer

thermal conductor

Answer

thermal insulator

Answer

thermal conduction

Question 3

The substance that conducts very little thermal energy is...

Accepted Answer

thermal insulator

Answer

thermal conduction

Answer

thermal conductor

Question 4

Which of the next options are poor conductors of thermal energy?

Accepted Answer

air and water

Answer

water and ice

Answer

air and fire

Question 5

Which of the next metals and non-metals are the best conductors?

Accepted Answer

diamond and silver

Answer

glass wool and polystyrene

Answer

rubber and wood

Question 6

Which of the next metals and non-metals are the best insulators?

Accepted Answer

glass wool and polystyrene

Answer

lead and marble

Answer

silver and cooper

Question 7

When you touch with your finger a metal object, the thermal energy...

Accepted Answer

is conducted out of your finger

Answer

conducts into the area that your finger is in direct contact

Question 8

When you touch with your finger a wooden object, the thermal energy...

Accepted Answer

conducts into the area that your finger is in direct contact

Answer

is conducted out of your finger

Question 9

Metals are good conductors because...

Accepted Answer

they electrons are free to move

Answer

they electrons move slowly

Answer

they electrons compact more

Question 10

What is an electron?

Accepted Answer

a negatively charged particle

Question 11

Thermal energy flows from the...

Accepted Answer

hotter parts of an object to the cooler parts

Answer

cooler parts of an object to the hotter parts

Question 12

What is convection?

Accepted Answer

the transfer of thermal energy through a material by the movement of the material itself.

Answer

the particles of thermal energy through a material by the movement of the material itself.

Answer

the comparison of thermal energy through a material by the movement of the other material.

Question 13

Convection currents help in...

Accepted Answer

to share energy between warm and cold places

Answer

to detect energy between warm and cold places

Answer

to create more particles between warm and cold places

Question 14

The particles in hotter fluid have more...

Accepted Answer

kinetic energy

Answer

convection current

Answer

thermal energy

Question 15

What is fluid?

Accepted Answer

a substance which can flow

Answer

a substace that is free

Answer

liquid and gas

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