Quiz 3

Question 1

Jovian Planets

Answer 1

Gaseous, outer solar system, rings and many moons

Question 2

Terrestrial Planets

Answer 2

Rocky, slow rotation, few or no moons, inner solar system

Question 3

Characteristics of a planet?

Answer 3

Orbits the sun, large enough for its own gravity to make it round and no smaller objects surrounding it

Question 4

Characteristics of a dwarf planet?

Answer 4

Orbits the sun and large enough for its own gravity to make it round.

Question 5

Characteristics of a small solar system body?

Answer 5

Orbits the sun

Question 6

Where are asteroids mostly found?

Answer 6

Orbit between Mars & Jupiter; asteroid belt

Question 7

Where are comets found?

Answer 7

Beyond Neptune’s orbit and are chunks of ice

Question 8

Kupier Belt

Answer 8

Region extends from Neptune to 500 AU from the sun. Some comets, more massive than asteroid belt

Question 9

Oort Cloud

Answer 9

50,000 to 100,000 AU from the sun, leftover material from solar system formation and the source of unbound comets

Question 10

How many dwarf planets does our solar system have?

Answer 10

5

Question 11

Which planet has the longest day and highest surface temperature?

Answer 11

Venus

Question 12

Which planet has the highest mass?

Answer 12

Jupiter

Question 13

Which planet has the highest density?

Answer 13

Earth

Question 14

Which planet orbits the sun the fastest?

Answer 14

Mercury

Question 15

Planets of what type of orbit are the most likely to survive?

Answer 15

Planets with circular orbits because they have less of a chance of getting hit than elliptical orbit planets.

Question 16

When the Earth started to cool down, which layer hardened first?

Answer 16

The outer layer (crust)

Question 17

Differentiation

Answer 17

Gravity takes heavier objects down, lighter objects go to the top. Denser parts go to the center and less dense parts go to the surface

Question 18

How did the outer planets form?

Answer 18

Like the inner planets, but with ice grains acting as seeds from which the rest of the planet grew. The ice held onto gas with gravity

Question 19

Unstable nuclei means what?

Answer 19

Too many protons or neutrons

Question 20

What is radioactive decay?

Answer 20

Change from one element to another

Question 21

What is significant about the star, “Pulsar”?

Answer 21

1st star extrasolar planets were found around

Question 22

What is the Astrometric method?

Answer 22

Precise measurements of star’s position in the sky taken with pictures over a period of time to watch for a wobble

Question 23

What is the Radial Velocity method?

Answer 23

Must be a flat orbit, look for blue or redshifts, yields orbital period, mass and distance from star

Question 24

What is the Transit Method?

Answer 24

Yields size of star, planet orbits in front of a star and tells the orientation along the line of site.

Question 25

Characteristics of migrating planets?

Answer 25

Orbits may shift but are highly elliptical, might knock out Earth-like planets and drag from dust and gas in disk.

Question 26

What is the habital zone?

Answer 26

Region around the star we see liquid water

Question 27

What are Super-Earths?

Answer 27

700+ rocky or ice or gas, slightly bigger than Earth