Planet Orbits

The closer a planet is to its host star: 

• the shorter the orbital period.
• the longer the semi-major axis.
• the colder the temperature.
• the more eccentric the orbit.

Tags

NGSS.HS-ESS1-4

Which of the following would increase the force of gravity on a planet?

• Decreasing the mass of the star.
• Decreasing the distance between the planet and star.
• Decreasing the mass of the planet.
• All of the above.

Tags

NGSS.MS-PS2-4

Within its orbit, as the planet gets closer to its host star:

• the planet speeds up.
• the force of gravity on the planet increases.
• the temperature of the planet increases.
• all of the above.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

The force keeping an object in circular motion

• Centripetal
• Centrifugal
• Acceleration
• Velocity

The force keeping a planet in orbit around the sun is...

• Friction
• Tension
• Gravity
• weight

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Planets orbit the Sun in a shape called a(n)

• circle
• ellipse
• focus
• perihelion

Tags

NGSS.MS-ESS1-2

What has an eccentricity of zero

• a straight line
• a large ellipse
• a circle
• a small ellipse

A planet moves __________ when it is farthest from the sun.

• faster
• slower

Tags

NGSS.HS-ESS1-4

Which diagram shows a planet with the least eccentric orbit?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-ESS1-2

Two factors effecting the magnitude of the force of gravity between 2 objects are...

• mass and distance 
• mass and matter
• distance and weight 
• weight and mass

Tags

NGSS.MS-PS2-4