Gravity

What is gravity?

• A type of current
• A type of force
• A type of wave
• A type of energy

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

The magnitude of gravity depends on two factors:

• Mass and distance
• Volume and density
• Size and shape
• Mass and volume

Tags

NGSS.MS-PS2-4

Why is the Earth's gravity stronger than the Moon's gravity?

• The Earth has a greater density than the Moon
• The Earth is a greater distance away than the moon
• The Earth has a greater volume than the Moon
• The Earth has more mass than the Moon

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

A skydiver jumps out of a plane, and starts to accelerate toward the center of the earth. This is NOT "free fall" because:

• She had to pay for the flight
• Gravity is the only force accelerating her
• She is an accelrating projectile
• The air is decreasing her acceleration

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Which has more inertia? A brick moving at 5 m/s or a brick moving at 100 m/s

• The brick moving 5 m/s has more inertia
• The brick moving 100 m/s has more inertia
• Both bricks have the same inertia

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Which has more inertia? A golf ball travelling at 1,000 mph or a bowling moving at 1 mph?

• The bowling ball has more inertia
• The golf ball has more inertia
• Both objects have the same inertia

An object will reach terminal velocity when falling through air if:

• Density and acceleration are balanced
• Gravity and friction are balanced
• Weight and velocity are balanced
• Mass and speed are balanced

Tags

NGSS.MS-PS2-2

Two spheres (round objects) with the same MASS are dropped from a bridge at the same time. Both are falling through air. One of the objects has a high VOLUME. The other object has a low VOLUME. Which object will reach the ground FIRST?

• The object with a high volume will reach the ground first
• The object with a low volume will reach the ground first
• The two objects will reach the ground at the same time

Two spheres (round objects) with DIFFERENT MASSES are dropped IN A VACUUM. Which object will reach the ground FIRST?

• The object with a higher mass will reach the ground first
• The object with a lower mass will reach the ground first
• The two objects will reach the ground at the same time

Tags

NGSS.MS-PS2-4

Two spheres (round objects) with the same MASS are dropped IN A VACUUM. One of the objects has a high VOLUME. The other object has a low VOLUME. Which object will reach the ground FIRST?

• The object with a high volume will reach the ground first
• The object with a low volume will reach the ground first
• The two objects will reach the ground at the same time