P1 Test Energy

A gas boiler transfers energy from a ............. store

to a .......... store.

• Chemical store to a thermal store

• Chemical to kinetic

• Kinetic to chemical

• Thermal store to kinetic store

• Gravitational potential store to kinetic store

As water falls from the shower, energy is transferred from a

.............. store to a .................. store.

• Chemical store to a thermal store

• Chemical to kinetic

• Kinetic to chemical

• Thermal store to kinetic store

• Gravitational potential store to kinetic store

A ceiling fan transfers energy from a ................ store

of the power station to a ..................store of the moving air.

• Chemical store to a thermal store

• Chemical to kinetic

• Kinetic to chemical

• Thermal store to kinetic store

• Gravitational potential store to kinetic store

A large drill is used to make a hole through rocks in the Earth’s surface to extract oil.

Suggest why the drill is water-cooled as it moves through the rocks.

• To keep the drill wet because the rock will dry it

• To keep the drill cool because friction will heat it

• To keep the drill clean because rocks make it dirty

Write down the equation that links gravitational potential energy, mass, gravitational field strength, and height.

• GPE = (m x h) / g

• GPE = m x g x h

• GPE = 1/ (m x g x h)

• GPE = m / (g x h)

Calculate the gravitaional potential energy gained when a 4kg mass is lifted 5m, Gravitational field strength, g is 10 N/kg

• 2J

• 19J

• 200m

• 200J

The gravitational potential energy of an object lifted 16 m above the surface is 320 J.

Calculate the mass of this object

(Gravitational field strength, g is 10 N/kg)

• 51,200 kg

• 2kg

• 20kg

• 512kg

What is the equation that links speed, energy, and mass?

• 
  

  $KE\ =\ mv^2$

• $KE\ =\ \frac{1}{2\ }mv$

• $KE=\frac{1}{2\ }mv^2$

• $KE=\frac{1}{2}m^2v^2$

A 4kg mass has kinetic energy of 32J what is the velocity of the mass?

• 16m/s

• 4m/s

• 2m/s

• 1m/s

What is the equation for the elastic potential energy stored in a spring?

• $Energy\ =\ k\ e$

• $Energy\ =\ \frac{1}{2\ }k\ e$

• $Energy\ =\ \frac{1}{2\ }k\ e^2$

• $Energy\ =\ \frac{1}{2\ }k^2e^2$