Revision-Science

What is the energy of movement?

• Light enrgy

• Thermal energy

• Kinetic energy

• Gravitational Potantial energy

The gravity act...?

• downwards

• upwards

• In the air

• Toward the centre of the Earth

In what unit is measured the mass?

• kg

• N

• G

In what unit is weight measured?

• Kg

• N

• G

• L

When does the frictions act?

• In the air

• On the ground

• When two surfaces are in contact with each other.

• When two surfaces are opposite

What's air resistance?

• Friction

• A force that makes hot object

• A force that a acts on objects movingthrought air

What does a streamlined shape do?

• It reduces air resistance

• It makes the vehicle move faster

• It makes car heavier

• It change shape

What does a force arrow shows?

• The direction of the wind

• The direction of a force

• Two objects interacting with each other

• The instrument to measure the force

When does a force happen?

• When two objects interact with each other

• When two objects don't interact with each other.

• When ther's a force arrow

• On a surface

Which type of units are forces measured?

• Kg

• Grams

• Liters

• N(Newton)