Physics Topic 1

Question 1

Kinetic Energy Equation

Answer 1

Kinetic Energy=½ mass x velocity (squared)

Question 2

Gravitational potential energy equation

Answer 2

Gravitational potential=mass x gravity field strength x height

Question 3

Elastic potential energy equation

Answer 3

Elastic potential energy= ½ spring constant x extension (Squared)

Question 4

Thermal energy equation

Answer 4

Thermal energy=Mass x Specific heat capacity x change in temperature

Question 5

What is Power

Answer 5

Power is the rate of energy transfer or doing work

Question 6

What is Conduction

Answer 6

Conduction is the process where vibrating particles transfer energy to neighbouring particles

Question 7

What is Thermal conductivity

Answer 7

Thermal conductivity is a measure of how quickly energy is transferred through material.

Question 8

What is Convection

Answer 8

Convection is where energetic particles move away from hotter to cooler regions

Question 9

How to reduce Unwanted energy transfers

Answer 9

Lubricate things and insulation to reduce friction and dissipated energy

Question 10

Efficiency equation

Answer 10

Efficiency=Useful output energy transfer
Total input energy transfer

Question 11

Name 3 fossil fuels

Answer 11

Coal, Oil and natural gas

Question 12

Name the 8 energy stores

Answer 12

Thermal, Kinetic, Gravitational potential, Elastic potential, Chemical, Magnetic, Electrostatic, Nuclear

Question 13

Where does conduction occur

Answer 13

in solids

Question 14

where does Convection occour

Answer 14

In liquids and gasses