5.PS2.3 Review Earth's Gravitational Force

Center of gravity is the exact _______ of an object's mass.

• left

• middle

• center

• total

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NGSS.MS-PS2-4

The Earth is pulling us, but we are also pulling the Earth.

• true

• false

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NGSS.MS-PS2-4

NGSS.MS-PS2-5

_________ is the pull from Earth that keeps objects from floating into space.

• Gravity

• Mass

• Inertia

Tags

NGSS.MS-PS2-4

Imagine an object falling to the Earth. Which of the following most accurately describes the motion of that object?

• Its motion is random as it falls.

• It falls toward the nearest solid ground.

• It falls southward.

• It falls toward the center of the Earth.

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NGSS.MS-PS2-4

NGSS.MS-PS2-5

NGSS.MS-PS2-2

In an experiment, six people at different places around the Earth drop an apple at the same time. Which apples will fall to the Earth?

• Only apple U will fall to the Earth.

• All of the apples will fall to the Earth.

• Only apples U and Z will fall to the Earth.

• Only apples U,V,Y & Z will fall to the Earth.

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NGSS.MS-PS2-4

NGSS.MS-ESS1-2

No matter where you are on Earth, the center of the Earth is always _______.

• straight up

• straight down

• to the South

• straight ahead

What would happen if the boys drop a rock from their locations?

• The rock dropped from location A will fall to the ground, but the rock dropped from location B will fall into outer space.

• Both the rocks dropped from location A and location B will fall to the ground.

• Both the rocks dropped from location A and location B will float in the air.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

A student describes the directions of gravity as "down". Which is the better explanation?

• "Down" describes the direction that the Earth is pulled toward the Sun.

• "Down" describes the direction toward the South Pole.

• "Down" describes the direction the Earth is rotating.

• "Down" describes the direction toward the center of the Earth.

Which of the following is true of Earth's gravity?

• It pulls objects toward the Earth's surface without touching them.

• It only has an effect on the Moon and the Sun.

• It only has an effect on objects farther than ten meters from the Earth's surface.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

What keeps objects on Earth from floating into space?

• inertia

• gravity

• mass

• volume

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NGSS.MS-PS2-4

NGSS.MS-ESS1-2