P1 Energy transfer by heating

Question 1

Which type of heat transfer happens best in solids? (1)

Answer 1

Conduction

Question 2

What do metals contain that enables them to be efficient conductors of heat? (1)

Answer 2

Delocalised (free) Electrons

Question 3

Which type of heat transfer can travel through a vacuum? (1)

Answer 3

Radiation

Question 4

Why does hot fluid rise? (3)

Answer 4

The particles gain energy and move faster (1), spread out (1), becoming less dense (1).

Question 5

What is evaporation? (1)

Answer 5

When a liquid changes into a gas at any temperature

Question 6

The greater the temperature…

Answer 6

The greater the rate of which energy is transferred

Question 7

How do you calculate heat capacity?

Answer 7

E=m x c x 0

Question 8

What spectrum is infrared radiation part of?

Answer 8

The electromagnetic spectrum.

Question 9

What colour surfaces are good at absorbing heat?

Answer 9

Black, full, matt ones

Question 10

What does black being a good emitter of radiation mean?

Answer 10

It will cool down more quickly than the same object in a shiny white ect.

Question 11

Describe the structure of particles in a solid

Answer 11

They vibrate about fixed positions so the solid has a fixed shape