Characteristics of the Solar System

Question 1

What discovery about Mars suggests conditions that may have once supported life? Mars has

Accepted Answer

small amounts of water in the soil.

Question 2

Astronauts must wear protective suits and helmets because they provide.........

Accepted Answer

Both warmth & protection from radiation

Question 3

What data could be collected, that gives scientists info about if life exists on that planet?

Accepted Answer

The presence of an atmospheric ozone layer

Question 4

Earth's atmosphere is composed of how much Oxygen gas?

Accepted Answer

21%

Question 5

In space, differences in ____ have to be accounted for in planning space missions.

Accepted Answer

Gravity

Question 6

If Earth were much smaller, it would not support life because it would not have enough mass to

Accepted Answer

have sufficient gravity to hold an atmosphere.

Question 7

What characteristics of Jupiter explains why Jupiter does not support life, while Earth does?

Accepted Answer

has virtually no water on the surface.

Question 8

One characteristic of Earth that allows life to exist is...

Accepted Answer

The availability of liquid water

Question 9

What characteristics of a planet will influence whether its temp. will be suitable to life?

Accepted Answer

The distance from the star of its orbit

Question 10

Layer of ozone in upper atmosphere of Earth is important to life because it shields Earth from

Accepted Answer

ultraviolet radiation.

Question 11

The magnetic field of Earth protects life against -

Accepted Answer

high energy particles from the Sun.

Question 12

The habitable zone for the star is about 225 mil. km away. Which planet can support life?

Accepted Answer

Planet Y

Question 13

Which gas in Earth's atmosphere is necessary for PLANT life forms as we know them?

Accepted Answer

Carbon Dioxide

Question 14

What is the most important factor that determines Earth’s temperature?

Accepted Answer

Proximity to the Sun

Question 15

In space, differences in ____ have to be accounted for in planning space missions.

Accepted Answer

Air temperature

Question 16

An astronauts space suit is hard on the outside to protect him against what?

Accepted Answer

small micometeoroids

Question 17

Magnetic Lines of force from Earth's polar north and south, acting like a giant magnet

Accepted Answer

Earth's Magnetic field

Question 18

What characteristic is necessary for a planetary body to allow life to exist is there?

Accepted Answer

An atmosphere of life supporting gases

Question 19

What characteristics of the planet, Earth, is essential to the survival of living organisms?

Accepted Answer

Earth has abundant available water.

Question 20

Earth's atmosphere is composed of how much Nitrogen gas?

Accepted Answer

78%

Question 21

One characteristic of Earth that allows life to exist is...

Accepted Answer

Proximity to the Sun

Question 22

Living in space shuttles, rockets and space stations, astronauts must ........

Accepted Answer

Eat & sleep

Question 23

In space, differences in ____ have to be accounted for in planning space missions.

Accepted Answer

Atmosphere

Question 24

Ozone contributes to supporting life on earth by blocking -

Accepted Answer

ultraviolet light.

Question 25

Gas in the Earth's atmosphere that absorbs most of the damaging ultraviolet radiation from sun

Accepted Answer

Ozone layer

Question 26

Earth is 150 mil. km from the Sun. If it was 200 mil. km away, it wouldn't support life because

Accepted Answer

the temperature would be too cold.

Question 27

Space stations require an oxygen system because the atmosphere in space...

Accepted Answer

is airless

Question 28

Which gas in Earth's atmosphere is necessary for human-like life forms as we know them?

Accepted Answer

Oxygen

Characteristics of the Solar System

Questions 28

Characteristics of the Solar System

Questions 28