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Flashcards in Chapter 29& 30 Deck (23):
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Our solar system

Was formed from a nebula
Has planets that orbit the sun
Has eight planets- including four inner planets; including three outer planets
Has other objects including comets

1

What planets is closer to the sun?

Mercury

2

What is the largest planet?

Jupiter

3

Which planets has been studied extensively for life?

Mars

4

What planets has the complex ring system?

Saturn

5

Our solar system about how many years ago?

4.6 billion years ago

6

Enormous cloud of gas, ice, dust... Called?

Nebula

7

Is our solar system heliocentric or geocentric?

Heliocentric with planets orbiting the sun in a counterclockwise

8

Planet with an extremely dense atmosphere?

Venus

9

Large canyon on mars?

Valles Marineris

10

Planet classification that orbits inside the asteroid belt?

Inner planet

11

Red planet

Mars

12

Planet classification that orbits outside the asteroid belt?

Outer planets

13

The order of the planets
Closest to farthest away

Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune

14

How does distance from the sun affect the speed of a planet?

Planets close to the sun it's mass is closer to the center of the solar system which results in an increased orbit speed
Planets in outer orbits orbits mass is farther from the center of the solar system, slows down speed of orbit

15

The inner planets

Mercury, Venus, earth , mars

16

Outer planets

Jupiter, Saturn, Uranus, Neptune

17

Why are the planets close to the sun rocky and smaller?

High temperatures vaporized the light elements so the planets have rough surfaces

18

Harsh environments where life exists on earth

Great pressure by volcanic vents- hot and dark
Permafrost areas in northeast Siberia- extreme cold
Mud in Mono Lake, CA- dark, lacking oxygen, large amounts of salt

19

Which planets has the moon Titan?

Saturn, Titan is its largest moon

20

Earths shape is?

Spherical

21

Earth complete..?

Orbits the sun once a year

22

Among Earth's physical properties is its rotation, which takes one _____ to complete?

Day