Gravity and orbits review

In the equation shown, what does G mean?

• The acceleration of gravity on the Earth

• The Universal gravitational constant

• The acceleration due to gravity on Mars

• The universal rate of acceleration twards objects.

Tags

NGSS.HS-PS2-4

In the equation shown, what mass do you use?

• The mass of the Sun

• The mass of the object you're orbiting around

• The mass of the object in orbit

• The sum of all masses involved

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

In the equation shown, what value do you use for "r"?

• r is the radius of the planet being orbited around

• r is the radius of the object in orbit

• r is the radius of the Sun

• r is the distance between the two relevant objects

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

You want to determine the orbital velocity of Jupiter around the Sun. What value should you use for r?

• 6.99*10^7

• 7.78*10^11

• 1.90*10^27

• 5.98*10^24

• 1.496*10^11

Tags

NGSS.HS-ESS1-4

You want to determine the orbital velocity of a moon in orbit around Saturn. What value for r should you use?

• 5.68*10^26

• 5.85*10^7

• 9.35*10^8

• 1.43*10^12

• None of these. You also need to account for the orbital distance of the moon

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

You want to determine the orbital velocity of Venus. Which value of mass should you use?

• 4.88*10^24

• 1.991*10^30

• 5.98*10^24

• 1.94*10^7

• 1.08*10^11

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

Kepler's 1st law describes the shape of orbits. What shape are they?

• Ellipses

• Perfect circles

• Hexagons

• Egg-shaped

• Parabolas

Tags

NGSS.HS-ESS1-4

Kepler's 2nd law tells us what about the orbits of planets?

• They go the same speed at every point in their orbits

• They sweep out the same area of their orbit for every equal interval of time

• They stay the same distance from the Sun at each point in their orbit

• Their orbits are always perfect circles

Tags

NGSS.HS-ESS1-4

What is a consequence of Kepler's 2nd law?

• Planets go the same speed at every point of their orbit

• Planets go faster when they're far from the Sun and slower when they're close to the Sun

• Planets go faster when they're closer to the Sun and slower when they're farther away

• Planet orbits slowly decay over time

Tags

NGSS.HS-ESS1-4

You stand 3 meters away from a friend of yours. If you have a mass of 70 kg and your friend has a mass of 80 kg, what is the force of gravity between the two of you? (G = 6.67*10^-11)

• 4.15*10^-8 N

• 1.25*10^-7 N

• 4150 N

• 1.55*10^-14 N

• 6778 N

Tags

NGSS.HS-PS2-4