First Semester Review

When placed at equal distances apart, the greatest gravitational attraction will be between two

• skateboards

• bowling balls

• school buses

Tags

NGSS.MS-PS2-4

Which is needed to determine the amount of gravitational force between two objects?

• distance and mass

• weight and time

• area and weight

Tags

NGSS.MS-PS2-4

A student drops a bowling ball and an apple from a third-story window. Both objects hit the ground at the same time. From the experiment, the student should conclude that

• the apple weighs more than the bowling ball

• more air friction is acting on the apple than on the bowling ball

• gravity pulls on both objects, causing them to fall at the same time.

Tags

NGSS.MS-PS2-4

Amanda weighs about 600 N on Earth, but would only weigh about 100 N on the Moon. Which BEST explains why Amanda would weigh less on the Moon than on Earth?

• The circumference of the Moon is smaller than Earth, therefore it has less gravity.

• The lack of air pressure on the Moon weakens the gravitational force of the Moon.

• The mass of the Moon is less than that of Earth, therefore it has a weaker gravitational force.

Tags

NGSS.MS-PS2-4

What is the relationship between mass and gravitational pull?

• Higher mass creates higher gravitational pull

• Lower mass creates higher gravitational pull

• Lower gravitational pull creates more mass

Tags

NGSS.MS-PS2-4

An astronaut way out in space is considered to be “weightless". This is because–

• his mass is so small relative to the earth that gravity doesn’t affect him.

• gravitational force increases greatly over long distances.

• gravitational force pushes objects away from each other at long distances.

• objects far away from the earth have less mass.

Tags

NGSS.HS-PS2-4

which statement below is FALSE

• Gravity acts on any object with mass.

• The closer objects are, the stronger the gravitational force between them.

• The farther you are from the center of Earth, the less gravitational force you feel.

• Gravitational force depends on what the object is made of.

Tags

NGSS.MS-PS2-4

Calculate the kinetic energy of a moving 4 kg object travelling at a velocity of 3 m/s.

• 18 J

• 36 J

• 12 J

• 6 J

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

How much kinetic energy does a moving 6 kg object have if it moves with a velocity of 3 m/s?

• 27 J

• 18 J

• 9 J

• 2 J

Tags

NGSS.MS-PS3-1

What is the mass of a moving object that has 100 Joules of kinetic energy and moves at a velocity of 2 m/s?

• 50 kg

• 200 kg

• 25 kg

• 100 kg

Tags

NGSS.MS-PS3-1