Gravity

In this lesson you should understand...

• What is gravity

• How mass and distance relate to gravity

• How gravity works in the solar system

• How gravity from the moon influences tides

Multiple Choice

Gravity is a _____ that _____

2 objects towards one another.

• thing

  reaches

• energy

  pushes

• force

  pulls

• weight

  takes

Multiple Choice

The planet Mars has less gravity than Earth. This is because Mars has ___________ mass than the planet Earth.

• less

• more

• the same

Multiple Choice

What two things determine the gravity of an object?

• length & height

• mass & distance

• color & mass

• volume & distance

Multiple Choice

Which model has greater gravitational attraction.

• model A

• model B

• both models have equal gravity

Multiple Choice

Which is the best answer?

Gravity pulls objects

• Down

• Up

• To the center

• To the side

Multiple Choice

A person would weigh more on Jupiter than on the Earth because . . .

• Jupiter has more mass, and therefore more gravity
• Jupiter has less mass, and therefore more gravity
• Jupiter has more mass, and therefore less gravity
• Jupiter has less mass and therefore less gravity

Multiple Choice

The first person to study gravity was an English scientist named __________.

• Einstein

• Fig Newton

• Isaac Newton

• Chris P. Bacon

Multiple Choice

Earth's tides are caused by the ___ gravitational force.

• moon's

• sun's

• planets'

• space station's

Multiple Choice

If the distance between two objects decreases, then the force of gravity ___.

• decreases

• stays the same

• increases

• increases and decreases

Poll

I understand...

• What is gravity

• Why gravity is different on other planets

• How mass and distance affect gravity

• What causes tides on Earth