Dunn Earth Science Practice Midterm F21

Which of the following correctly describes the shape of a planet's orbit?

• Ellipse
• Revolution
• Circular
• Rotation

Earth's axis tilts ___, which is part of the reason that we experience different seasons.

• 90*
• 45*
• 12*
• 23.5*

The Big Bang Theory occurred approximately ___ years ago while the Earth formed approximately ___ years ago.

• 14 bya, 4.6 mya
• 4.6 bya, 14 mya
• 4.6 bya, 4.6 mya
• 4.6 mya, 2018

What is synchronous rotation?

• Earth's revolution and the sun's rotation are the same
• Earth's rotation and the sun's revolution are the same
• Earth's rotation and the moon's rotation are the same
• Earth's revolution and the moon's revolution are the same

Earth's rotation affects what concept?

• Seasons
• Equinoxes
• Year
• Day

Earth's revolution affects what concept?

• Day
• Tides
• Coriolis effect
• Year

What is a solar eclipse?

• When the moon gets between the sun and the Earth.
• When the Earth gets between the sun and moon
• When the sun gets between the moon and the Earth
• When the sun has too many sun spots and goes darker than normal

Water that formed the ocean came from what TWO sources?

• Volcanic eruptions
• Comets
• Earthquakes
• Meteors
• Asteroids

The Ejected Ring or Impact Theory describes how the ___ formed.

• Earth
• Oort cloud
• Moon
• Solar system

How do the inner planets compare to the outer planets?

• They are smaller and more dense
• They are larger and more dense
• They are smaller and less dense
• Option 4