AB Science

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

Which of the following discoveries about Mars suggests conditions that may have once supported life? Mars has –

• the tallest mountain in the solar system.

• two moons orbiting the planet.

• only a small amount of atmosphere.

• small amounts of water in the soil.

Tags

112.19.b.9.B

Match the following

• Atmosphere

• Keeps Earth’s temperature stable

  and cool

• Magnetic field

• Protects life on Earth from harmful

  particles from solar winds

• Distance from the Sun

• Is necessary for life as we know it

• Water

• Affects temperature of a planet

Tags

112.27.b.9.C

Astronauts must exercise regularly while in space to prevent their

​ (a)   and bones from becoming weak.

• muscles

• blood

• heart

• vessels

• liver

Tags

112.19.b.9.B

​ (a)   protect astronauts from the cold temperature and

provide ​ (b)   for the astronauts to breathe.

• space suits

• oxygen

• helmets

• jet packs

• velcro

• carbon dioxide

Tags

112.19.b.9.B

There is some evidence to suggest that Mars once had liquid ​ (a)   ,

though now it may be trapped as ​ (b)   .

• water

• ice

• oxygen

• nitrogen

• rock

Tags

112.27.b.9.C

In the vacuum of space, there is no

​ (a)   . A spacesuit also provides the astronaut

with air to breathe. The ​ (b)   may come from a hose

from the spacecraft.

• air to breathe

• oxygen

• sunlight

• meteors

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112.27.b.9.C

The helmet on the spacesuit must be made of a tough plastic. The plastic must be tinted to protect an astronaut's eyes from the blinding light of the ​ (a)   .

• Sun

• moon

• meteor

• Earth

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112.27.b.9.C

Which of the following characteristics of a planet will have the greatest influence on determining whether or not its temperature will be suitable to support life?

• The amount of its gravitational force.

• The number and size of active volcanoes.

• The tilt of the axis of rotation of the planet.

• The distance from the Sun of its orbit.

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112.19.b.9.B

All of the following characteristics of Jupiter’s moon, Europa, are conditions that make it suitable for supporting life EXCEPT -

• A water on the surface.

• B oxygen in the atmosphere.

• C gravity on the surface.

• D surface temperature of -260oF.

Tags

112.19.b.9.B