Heat

Question 1

Define heat

Answer 1

Flow of energy due to temperature changes from high to low

Question 2

Define temperature

Answer 2

Measure of the average kinetic energy of all the particles in the object (NB! HEAT = ENERGY)

Question 3

Atoms _______ and _______ determine the temperature of object; more ______ and _______ = hotter; less _____ and ______ = cooler

Answer 3

Mass
Speed
Mass
Speed
Mass
Speed

Question 4

All matter is made up of atoms that are ______, even solids have _______ atoms. _____ of atoms = gives object energy

Answer 4

Moving
Moving
Motion

Question 5

Name the 3 units used to measure temperature.

Answer 5

Celsius (C)
Fahrenheit (F)
Kelvin (K)

Question 6

Celsius: Water freezes at _ degrees C and boils at ___ degrees C.

Answer 6

0

100

Question 7

Fahrenheit: Water freezes at __ degrees F and boils at ___ degrees F.

Answer 7

32

212

Question 8

Kelvin: Water freezes at ___ degrees K and boils at ___ degrees K.

Answer 8

273. 15

373. 15

Question 9

Define thermometer

Answer 9

Measures temperature using the liquid substance inside - always expands (increases) or contracts (decreases) by a certain amount due to a change in temperature.

Question 10

Define thermal energy

Answer 10

Random kinetic energy of particles in an object

Question 11

Name the 3 ways that heat is transferred

Answer 11

Conduction
Convection
Radiation

Question 12

Define conduction

Answer 12

Requires direct contact to transfer energy from one object to another

Question 13

Define insulator

Answer 13

Materials that do not transfer energy easily

Question 14

Define convection

Answer 14

Movement in a gas/liquid in which warmer parts move up and cooler parts move down

Question 15

Define radiation

Answer 15

Energy that travels by electromagnetic waves through space