The Solar System

Review

Question 1:Name the inner

planets from closest to

farthest from the sun.

Answer:Mercury VenusEarthMars

Question 2:Describe the

relative size of the inner planets.

Answer:The inner

planets are smaller than the

outer planets except for Pluto.

Question 3:Describe the

relative distance of the inner planets from each other.

Answer:The inner

planets are closer together (and to the sun) than the outer

planets.

Question 4:Describe the

surface (composition) of

the inner planets.

Answer:The inner

planets are all composed of

rock.

Question 5:Describe the

location of the asteroid belt.

Answer:The asteroid

belt is located between Mars

and Jupiter (the inner and outer

planets).

Question 6:Name the outer

planets from closest to

farthest from the sun.

Answer:JupiterSaturnUranus

NeptunePluto

Question 7:Describe the

relative size of the outer planets.

Answer:The outer

planets are much larger

than the inner planets except

for Pluto.

Question 8:Describe the

relative distance of the outer planets from each other.

Answer:The outer planets are much farther apart (and farther

from the sun) than the inner

planets.

Question 9:Describe the

surface (composition) of

the outer planets.

Answer:The outer planets are composed of gases. Pluto’s

surface is made of rock like the inner

planets.

Question 1o:List 2 ways

Pluto is different from the other outer planets.

Answer:•Pluto is small compared to the other outer planets.•Pluto is composed of rock compared to the “gas giants.”•Pluto does not have any rings.

Question 11:List 3 reasons

humans cannot live on other

planets.

Answer:•Extreme temperatures•Gas surfaces (composition)•Minimal or no oxygen•Too much or too little pressure•No drinkable, liquid water•Extreme weather

Question 12:These two

forces keep the planets from

flying out of the solar system.

Answer:

Gravity and Inertia

Question 13:What is the

tendency of a moving object

to continue moving in a

straight line?

Answer:

Inertia

Question 14:What is the force that

attracts objects toward each

other?

Answer:

Gravity

•Why don’t the planets fly out of the solar system? Explain in detail!

Question 15:Which planet is the closest in size to Earth?

Answer:

Venus

Question 16:Which two

planets make up over 95% of the mass of all the

planets?

Answer:

Jupiter and Saturn

Question 17:

What is the innermost layer

of the Sun?

Answer:

Core

Question 18:Which layer of

the Sun is visible to us on Earth? (the one

that we see)

Answer:

Photosphere

Question 19:Which outer

layer of the Sun is only visible to

us during a solar eclipse?

Answer:

Corona

Question 20:What are the dark, cooler spots on the photosphere

called?

Answer:

Sun Spots

Question 21:What is the name of the middle layer of the sun which gives off a reddish glow

during a solar eclipse?

Answer:

Chromosphere

Question 22:What are the

explosions that occur on the Sun

which release large amounts of energy

called?

Answer:

Solar Flares