Gravitation

Newton said that any two masses will...

• combine into a larger mass.

• attract each other.

• create gravitational fields.

• push each other apart.

Tags

NGSS.MS-PS2-4

According to Newton's law of gravitation, the Earth and the Moon are gravitationally attracted to each other. The more massive Earth attracts the Moon with...

• a stronger force than the Moon attracts the Earth.

• a weaker force than the Moon attracts the Earth.

• the same force as the Moon attracts the Earth.

• a force that is sometimes stronger and other times weaker than the Moon attracts the Earth.

Tags

NGSS.MS-PS2-4

NGSS.MS-ESS1-2

Which of the following best explains why a person has less weight on top of a mountain?

• They are closer to space.

• The atmosphere is lighter.

• The mountain adds more mass.

• The mountain adds more distance.

The picture shows three objects gravitationally interacting with each other. Which object exerts the greatest force on object B?

• Object A

• Object C

• A and C exert an equal force on B

• Cannot be determined

Tags

NGSS.MS-PS2-4

The mass and radius of four exoplanets are shown in terms of the Earth's mass and radius. On which of these planets will the surface gravity be greater than on Earth?

• planet-b

• planet-c

• planet-d

• planet-e

The picture shows two exoplanets, b and c. The mass and radius of each planet is given in terms of M and r. What is the surface gravity on planet-c if the surface gravity on planet-b is 4 m/s²?

• 2 m/s²

• 4 m/s²

• 8 m/s²

• 32 m/s²

A newly discovered exoplanet has triple the mass and double the radius as compared to Earth. What is the approximate surface gravity on this exoplanet?

• 1.5 N/kg

• 7.5 N/kg

• 15 N/kg

• 60 N/kg

Suppose an exoplanet is found that has the same mass as the Earth, but is slightly larger than the Earth. What would be the surface gravity on this planet?

• less than 10 N/kg

• equal to 10 N/kg

• more than 10 N/kg

• cannot be determined

The surface gravity on Earth is approximately 10 N/kg. What would the surface gravity be if the Earth contained twice as much mass?

• 5 N/kg

• 10 N/kg

• 20 N/kg

• 40 N/kg

Which of the following statements is correct with respect to G and g?

• G is a fundamental constant, whereas g is a physical quantity and subject to change.

• Both G and g can change, but g can only change if you go to a different planet.

• G and g are both constant, but g is determined by the mass and radius of the Earth.

• The strength of G is determined by g.

Tags

NGSS.HS-PS2-4