Some kinetic energy is converted into……………………. Energy due to friction of bikes tires with the road.

• Light

• electrical

• potential

• thermal

Lichens produce…………….. On rocks that dissolve the minerals found in these rocks.

• Oxygen

• acids

• water

• rain

inside the electric power station heating of…………………. Produces steam.

• Turbine

• generators

• water

• fuel

While playing guitar, the ………….. Energy changes into sound energy.

• Kinetic

• light

• chemical

• potential

There are two types of weathering which are………………… and………………..

• Mechanical-chemical     

• mechanical -electrical

• chemical -potential

The output energy when playing drums is the ……………….

• Chemical

• light

• sound

• potential

when the blades of wind turbine rotate this causes the turbine to rotate and generate…………….. Energy.

• Electrical

• solar

• chemical

• potential

all the following are forms of fossil fuel, except...................

• water

• coal

• natural gas

• oil

grinding of biscuits by hands into fine powder has the same effect as mechanical weathering on rocks?

• true

• false

the movement of the generator in an electric power station produces potential energy?

• true

• false