Podcast
Questions and Answers
What primarily causes a compass to point north?
What primarily causes a compass to point north?
- The Earth's magnetic field (correct)
- Cosmic rays
- Van Allen radiation belts
- Solar wind
What is the primary composition of Earth's atmosphere?
What is the primary composition of Earth's atmosphere?
- Carbon dioxide (78%) and nitrogen (21%)
- Oxygen (78%) and nitrogen (21%)
- Oxygen (78%) and carbon dioxide (21%)
- Nitrogen (78%) and oxygen (21%) (correct)
What creates the aurora (northern lights) near the poles?
What creates the aurora (northern lights) near the poles?
- Particles flowing down to poles generating the aurora (correct)
- Cosmic rays
- Solar wind
- Van Allen radiation belts
What is the region protected by the Earth's magnetic field called?
What is the region protected by the Earth's magnetic field called?
What percentage of the Earth's water is freshwater?
What percentage of the Earth's water is freshwater?
Which two elements make up 90% of the Earth's solid mass?
Which two elements make up 90% of the Earth's solid mass?
What is the average depth of the sea floor?
What is the average depth of the sea floor?
What is the average elevation of the land?
What is the average elevation of the land?
What is the boundary between the crust and mantle called?
What is the boundary between the crust and mantle called?
Which layer of the Earth is solid and produces the magnetic field?
Which layer of the Earth is solid and produces the magnetic field?
What type of rock is basalt?
What type of rock is basalt?
What is the layer of the Earth known as plastic flow?
What is the layer of the Earth known as plastic flow?
What protects the Earth from electrically charged particles of the solar wind?
What protects the Earth from electrically charged particles of the solar wind?
What are the two most common gases found in the Earth’s atmosphere?
What are the two most common gases found in the Earth’s atmosphere?
What is the thinnest layer of the Earth?
What is the thinnest layer of the Earth?
Which layer of the Earth is its hottest?
Which layer of the Earth is its hottest?
