Science Exam Revision

_____ is the force that slows and stops motion between touching objects.

• Friction
• Gravity
• Pull
• Push

In the image, what force is acting on arrow A?

• friction
• gravity
• push
• Jedi force

What keeps the Moon in orbit around Earth?

• Earth's rotation.
• Earth's atmosphere.
• Earth's gravity.
• Earth's shape.

If all four forces are balanced, the plane will

• plummet to the ground
• fly faster and faster
• fly slower and slower
• fly at a constant speed and direction

There's only one kind of force.

• True

• False

_____ have molecules that are packed together and hardly move.

• solids

• liquids

• gases

• plasma

____ have a definite volume and molecules that are spread out and can move past one another.

• solids

• liquids

• gases

• plasma

____ have molecules that can spread out far from each other and move quickly.

• solids

• liquids

• gases

• plasma

Which state of matter is shown by model B?

• solid

• liquid

• gas

Mixture or Solution?

• Mixture

• Solution