PHYSICS F3 T2 TEST 1

Question 1

WHAT IS HEAT?

Answer 1

The amount of energy transferred from one body to another by virtue of a temperature difference between them.

Question 2

WHAT DOES HEAT DEPEND ON?

Answer 2

The amount of substance as well as the nature of the substance.

Question 3

WHAT IS THE UNIT FOR HEAT?

Answer 3

Joule.

Question 4

HEAT FLOWS FROM AN AREA OF TO AND AREA OF UNTIL IS REACHED.

Answer 4

Heat flows from an area of high temperature to an area of lower temperature until Equilibrium is reached.

Question 5

WHAT IS TEMPERATURE?

Answer 5

A measure of the average kinetic energy of the molecules of a substance.

Question 6

WHAT IS TEMPERATURE INDEPENDENT OF?

Answer 6

The amount of substance

Question 7

WHAT IS TEMPERATURE MEASURED USING?

Answer 7

A thermometer.

Question 8

WHAT DOES HEAT ENERGY DEPEND ON?

Answer 8

1.The speed of the particles.
2.The number of particles.
3.The type of particles.

Question 9

WHAT ARE 4 PHYSICAL PROPERTIES THAT VARY WITH TEMPERATURE?

Answer 9

1.Resistance of wire.
2.Volume of gas (when pressure is kept constant)
3.Pressure of gas (when volume is constant)
4.Expansion of mercury and alcohol.

Question 10

WHAT IS TEMPERATURE MEASURED IN?

Answer 10

Kelvin.

Question 11

STATE 4 DIFFERENCES BETWEEN HEAT AND TEMPERATURE.

Answer 11

1.Heat is measured in joules whereas temperature is measured in kelvin.
2.Heat is not directly determined by an instrument whereas temperature is determined by a thermometer.
3.Heat is a form of energy whereas temperature is the degree of hotness and coldness of a body.
4.Heat is a derived quantity whereas temperature is a fundamental quantity.