100 Facts of Science #33-43

What is the name of the force that pulls objects toward each other?

• Gravity
• Orbit
• Rotation
• Revolution

How often does the moon revolve around the earth?

• Once a week
• Once a day
• Every 28 days
• Once a year

If you are standing on the moon, what would change, MASS or WEIGHT?

• Weight
• Mass
• Both

What is the definition of the word mass?

• The amount of matter in an object
• The pull of gravity
• The sail on a ship
• The pull of the moon

What is the definition of the word weight?

• The amount of matter in an object
• The measure of the pull of gravity
• The pull of the moon
• The sail on the ship

What is the definition of the word friction?

• The force caused when one object rubs against another object
• A force that pulls across a distance
• The measure of the pull of gravity
• The amount of matter in an object

What surface creates more friction - a smooth or a rough surface?

• Smooth
• Rough

What is the definition of the word energy?

• the ability to move or change matter
• vibrating air
• a force caused when one object rubs against another object.
• the force that pulls across a distance

Which is not a type of energy?

• Electrical
• Solar
• Nuclear
• Friction

On a magnet, do opposite polls attract or repel?

• Attract (Pull together)
• Repel (Push away)