Planets and Stars Review

How do main sequence stars like the sun make their energy?

• fusion of hydrogen into helium

• fission of hydrogen into helium

• fusion of helium into hydrogen

• fission of helium into hydrogen

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

A nebula is...

• cosmic microwave background

• planets that are in the process of forming

• a cloud of dust and gas in space

• the same thing as a singularity

After a small star has used up all of it's hydrogen, it will become a......

• white dwarf

• red giant

• interstellar cloud

• supernova

True or False: All stars will eventually become a black hole

• True

• False

When a supergiant runs out of fuel for fusion it will collapse in on itself and explode in a ....

• big bang

• black hole

• nebula

• supernova

A star will remain on the main sequence as long as it can balance the inward force of _________ with the outward force of _____________.

• gravity, luminosity

• gravity, nuclear fusion

• nuclear fusion, gravity

• nuclear fusion, temperature

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-ESS1-2

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 orbital period of a planet:

• depends on how far away from the star it is.
• describes how long "one year" would be on that planet.
• is how long it takes the planet to go around its star.
• all of the above.

Tags

NGSS.MS-ESS1-2