Gravity review

What is gravity?

• a force

• the natural pull of objects towards each other

• both A & B

• none of the above

What can a force cause an object to do?

• move

• change direction

• both A & B

• none of the above

Because of the Earth's gravitational pull, objects are pulled toward

• the center of the earth

• the southern hemisphere

• the sky

• the south pole

Gravity

• makes things have weight

• makes things fall when you drop them

• holds the moon in orbit around the earth

• all of the above

Who was the first person to seriously study gravity?

• Stephen Hawking

• Isaac Newton

• Albert Einstein

• Thomas Edison

Why do higher and lower ocean tides occur?

• The force of gravity bewteen the sun and the moon.

• The force of gravity between the earth and the moon.

• The force of gravity between the earth and the sun.

Gravity keeps the planets

• rotating

• in a certain order

• orbiting the sun

The sun has more gravity than Earth, but we stay on Earth's surface instead of being pulled to the sun because we are much closer to Earth.

• True

• False