Astronomy (A1 & A2) Study Guide

Which choice accurately describes the function of the earth's atmosphere?

• It absorbs all radiation from the sun

• It blocks harmful radiation but traps warmth

• It reflects all the radiation from the sun

• It absorbs light radiation but blocks heat radiation

What might happen if the Earth did not have a magnetic field?

• We might be bombarded by dangerous cosmic rays

• The planet would immediately become too cold

• The planet would immediately become too hot

• The oxygen in the atmosphere might dissipate (go away or disappear).

What keeps earth's temperature at the proper level for life?

• Its distance from the sun

• Its polar ice caps

• Its metallic core

• Its magnetic field

Tags

NGSS.HS-ESS2-4

Scientific evidence indicates that Earth is about_____________ years old. Choose the correct answer.

• 4.5 billion

• 12, 000

• 6, 000

• 1 million

Tags

NGSS.MS-ESS1-4

What does Mercury, Venus, Earth, and Mars have in common?

• They have solid and rocky surfaces.

• They are Gas planets.

• They are called Inner and Terrestrial planets.

• They are called Dwarf planets.

What do these four Outer planets have in common?

• They are closest to the Sun.

• They are composed mostly of gases (helium and hydrogen).

• They are closest to the Sun.

Tags

NGSS.MS-ESS1-3

The spinning of the Earth on its axis, causing day and night is called:

• orbit

• revolution

• gyration

• rotation

Tags

NGSS.MS-ESS1-1

What causes the seasons on Earth?

• the tilt of the Sun on its axis

• the tilt of the Moon on its axis

• the angle at which sunlight strikes the surface of Earth during its annual revolution around the sun

Tags

NGSS.MS-ESS1-1

Which of these causes tides on the Earth?

• The gravitational pull of the moon

• The revolution of the Earth around the sun

• Differences in wind speed around the Earth

• The tilt of the Earth's axis

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

How long does it take for Earth to make one revolution?

• 24 hours

• 365 and 1/4 days

• 1 month

• 1 day

Tags

NGSS.MS-ESS1-1