Gravity and the planets

A brick and a pencil are dropped at the same time from the same height. Which one would hit the ground first?

• brick

• pencil

• both would hit at the same time

What two things determine the gravity of an object?

• mass & weight

• mass & distance

• density & mass

• volume & distance

Why a ball falls to the ground?

• Earth's force of gravity is GREATER than the ball's, so the ball gets attracted to the ground. 
• Earth's force of gravity is LESS than the ball's, so the ball gets attracted to the ground. 

Which has more mass, Earth or the Moon?

• Earth
• Moon
• The same

Which has a STRONGER force of gravity, Earth or the Moon?

• Earth
• Moon

What is mass?

• How much MATTER makes up an object.
• How much GRAVITY is pulling an object.

A person would weigh less on on the Moon than on the Earth because . . .

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

What keeps the planets in orbit around the sun?

• gravity

• friction

• density

• distance

Two factors effecting the magnitude of the force of gravity between 2 objects are...

• mass and distance 
• mass and matter
• distance and weight 
• weight and mass

Any object with mass has gravity.

• True
• Sometimes
• False
• Never