Gravity

On which object will Earth’s gravity act with the greatest magnitude?

• a piano

• a toaster

• a feather

• a chromebook

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NGSS.MS-PS2-4

Which statement about gravitational attraction is correct?

• All objects with mass experience gravitational attraction.

• Objects in space will not have any gravitational attraction.

• All objects on Earth experience the same gravitational attraction.

• Objects with greater volume have a greater gravitational attraction.

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Why does a beach ball weigh less than a bowling ball?

• The beach ball is less strongly attracted to Earth.

• The beach ball pushes harder against Earth.

• The beach ball has more mass.

• The beach ball has more air.

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NGSS.MS-PS2-4

A spacecraft flies within 500,000 km of each of these planets. Based on its mass, which planet would gravitationally attract the spacecraft the least?

• Mars

• Jupiter

• Venus

• Neptune

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

A student conducts an investigation to study the effect of gravity on objects of different masses. Which step should be first in the investigation?

• Find objects of different masses and measure them.

• Time how long it takes for the objects to fall.

• Drop the objects from a height.

• Measure the distance between the objects.

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NGSS.MS-PS2-2

A science class is conducting an investigation to see how gravity affects objects of different masses. They drop three balls from the same height. They time how long it takes the balls to hit the ground. What are the students comparing?

• the time it takes for each ball to fall

• the mass of each ball

• the gravitational attraction of each ball

• the height from which each ball is dropped

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A hammer and a feather are dropped from the same height. Imagine that there is no resistance to the objects' motion in air. Which value will be different for the two objects?

• the gravitational attraction between the Earth and the objects

• the time it takes for them to fall

• the upward push of air resistance

• the velocity of the objects

Tags

NGSS.MS-PS2-4

A coin (5 grams), a small parachute (21 grams), and a hammer (710 grams) are all dropped from a height of 10 meters. The coin and the hammer take about the same amount of time to fall. Which statement describes the time it takes for the parachute to fall?

• It takes longer to fall because it experiences greater air resistance.

• It takes less time to fall because it has the most surface area.

• It takes the same amount of time to fall because the effect of gravity is the same. 

• It takes less time to fall because it has the least mass.

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NGSS.MS-PS2-2

NGSS.MS-PS2-4

Which object would have the slowest speed at terminal velocity?

• a 50-kilogram block with a large parachute

• a 10-kilogram block with a small parachute

• a 10-kilogram block with no parachute

• a 50-kilogram block with no parachute

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NGSS.MS-PS2-2

NGSS.MS-PS2-4

How does an open parachute slow a skydiver’s fall?

• The parachute increases the force opposing gravity.

• The parachute pulls the skydiver up.

• The parachute changes the mass of the skydiver.

• The parachute weakens the force of gravity.

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS2-4