heat

Question 1

explain the state of the atoms in their 3 different states

Answer 1

solid - particles stay in their spot tightly packed, vibrating
liquid - particles flow freely and are loose, also vibrate on the spot
gas - particles are free can move anywhere

Question 2

when heat is applied to a substance, what happens to the atoms?

Answer 2

the atoms gain kinetic energy to move/vibrate rapidly

Question 3

what happens to the atoms when there isn’t any heat applied?

Answer 3

the particles don’t move

Question 4

what does a thermometer measure?

Answer 4

measures temperature, the measure of the average kinetic energy of particles in the substance, depending on the substances state.

Question 5

the particles of hotter substances move…

Answer 5

…fast

Question 6

the particles of cold substances move…

Answer 6

…slow, or don’t move

Question 7

what temperature is absolute zero?

Answer 7

• 273 celsius

Question 8

what temperature do particles stop moving completely?

Answer 8

• 273 celsius

Question 9

what is heat used to describe?

Answer 9

it is used to describe the total energy of all particles within an object

Question 10

name three ways of heat transfer:

Answer 10

conduction, convection and radiation

Question 11

what is heat transfer?

Answer 11

it is when heat travels from a hot place to an area of lower temperature

Question 12

the more heat…

Answer 12

the faster heat can travel

Question 13

what is conduction?

Answer 13

it is when heat transfers from a hot place to a colder one

Question 14

why do the hotter particles travel to colder areas quickly?

Answer 14

because it has alot of kinetic energy to move faster

Question 15

conduct?

Answer 15

control

Question 16

four great conductors of heat:

Answer 16

aluminium, silver, gold and copper

Question 17

what do good conductors do?

Answer 17

they can keep the heat of the substance or coldness

Question 18

seven insulators:

Answer 18

wood, plastic, air, gas, cloths, cork and rubber.

Question 19

what do insulators do? know as what?

Answer 19

insulators block heat transfer completely, poor conductors of heat.

Question 20

when does air get to move?

Answer 20

when air is heated, it gets the energy to move

Question 21

hot air is less?

Answer 21

dense than cold air

Question 22

what makes air pushed upwards?

Answer 22

cold air

Question 23

what can happen in convection? why?

Answer 23

heat can transfer in solids and gasses because their particles can move around, and cant happen in solids because particles won’t be able to move

Question 24

what is convection?

Answer 24

is the transfer of heat in a liquid or gas because of less dense warmer matter rises and the cooler matter falling

Question 25

what is radiation?

Answer 25

when heat is transferred through the action of waves

Question 26

radiation can emit waves at the speed of…

Answer 26

light