7.9

Earth’s ____________________________ helps protect life from ultraviolet radiation.

• ozone layer

• oxygen content of atmosphere

• presence of water

• proximity to the Sun

Tags

112.27.b.9.C

Which of the following discoveries about Mars suggests conditions

that may have once supported life? Mars has –

• A the tallest mountain in the solar system.

• B two moons orbiting the planet.

• C only a small amount of atmosphere.

• D small amounts of water in the soil.

Tags

112.19.b.9.B

Match the following

• Space suit

• A man-made laboratory that is placed in

  space for research

• Instruments

• The protective gear that protects

  astronauts from the cold, airless

  environment of space

• Accommodations

• The living quarters and equipment used to

  protect astronauts while in space

• Space station

• The specialized equipment used to

  conduct research and repair damaged

  equipment

Tags

112.27.b.9.C

If Earth were much smaller than it is now, it would not support

life because it would not have enough mass to -

• A collect needed radiant energy from the Sun.

• B maintain a gravitational pull on the Moon.

• C have sufficient gravity to hold an atmosphere.

• D rotate on its axis once per day.

Tags

112.19.b.9.B

List the steps of the scientific method

d

e

f

c

b

a

Draw conclusions

Ask a question

Form a hypothesis

Conduct experiment

Communicate results

Analyze results

Tags

NGSS.HS-PS1-3

NGSS.HS-PS3-4

All of the following are ways that the atmosphere makes the existence of life on Earth possible EXCEPT ...

• maintains a constant temperature

• shields Earth from small collisions

• offers protection from radiation

• allows for gas exchange between plants and animals

Tags

NGSS.MS-LS2-3

What force holds Earth's atmosphere in place?

• Gravity

• the weight of the atmosphere is sufficient to hold the atmosphere in place.

• This spinning of the the Earth creates teh force needed to hold teh atmosphere in place.

• None of these.

Which of the following conditions are absolutely necessary for a planet to support life?

• All must be present for a planet to support life

• I, II, and IV

• II and III

• II, IV, and V

How does the Ozone in our atmosphere contribute to life on our planet?

• It attracts dust particles by using the Earth's magnetic field.

• Blocks radiation from the sun

• Ozone absorbs moisture in the air.

• None of these

Which planet would be the most likely place to observe for life?

• A

• B

• C

• D