Earth's Structure and Composition Review

What are magnetically and electrically charged particles that stream out from the sun in all directions

• solar flares
• solar winds
• magnetic field
• electric field

What is created from the flow of liquid iron in the outer core?

• solar flares
• solar winds
• magnetic field
• electric field

What deflects particles of solar wind into space away from Earth?

• solar flares
• solar winds
• magnetic field
• electric field

The magnetic field causes the Earth to act like a large ________ with a north and south ________

• pole, magnet
• magnet, hemisphere
• magnet, pole
• planet, pole

What does the Van Allen radiation belts protect us from?

• aliens
• the moon
• cosmic radiation
• other planets

What are distinct layers of gases that surround the solid portion of Earth?

• atmosphere
• magnetosphere
• asthensophere
• mesosphere

What are the main gases in our atmosphere

• Oxygen and carbon dioxide
• Nitrogen and oxygen
• Oxygen and hydrogen
• Helium and nitrogen

True or False. All planets have atmospheres.

• True
• False

Which letter shows where metamorphic rock would be?

• B
• D
• F
• H

How long ago did oxygen begin to accumulate in our atmosphere

• 100 years ago
• 1000 years ago
• 2.5 billion years ago
• 3.5 billion years ago