RESUMEN, POWERPOINT Y TEST DEL TEMA 8: FORCES AND ENERGY.

SUMMARY.

FORCES:

Different forces make objects move.

Different forces make objects stop.

A rowing boat moves with the force of people.

A sailing boat moves with the force of the wind.

A force can change the shape of an object.

A force can break an object.

ENERGY

People get energy from food.

Some machines get energy from electricity.

Some machines get energy from sunlight.

Some machines get energy from fuel.

RENEWABLE SOURCES:
They are clean and they will never run out.

The sun, the wind and the water are renewable sources.

NON-RENEWABLE SOURCES:
They pollute and they will run out one day.
Petroleum and coal are non-renewable sources.

SOUNDS
Sounds can be soft or loud


Sounds can be high or low.

  

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