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Questions and Answers
Which region is created by Earth's magnetic field extending out into space?
Which region is created by Earth's magnetic field extending out into space?
- Atmosphere
- Ionosphere
- Stratosphere
- Magnetosphere (correct)
What happens to a planet when it loses its magnetic field?
What happens to a planet when it loses its magnetic field?
- It becomes smaller
- It becomes colder
- It becomes uninhabitable (correct)
- It becomes hotter
Where are Earth's magnetic poles located in relation to the geographic poles?
Where are Earth's magnetic poles located in relation to the geographic poles?
- Exactly at the geographic poles
- On the opposite side of the Earth
- Randomly scattered across the Earth
- Relatively close (about 10 degrees) (correct)
What are the invisible lines that represent Earth's magnetic field called?
What are the invisible lines that represent Earth's magnetic field called?
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What shields us from the constant bombardment of charged particles emitted from the sun?
What shields us from the constant bombardment of charged particles emitted from the sun?
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Study Notes
Earth's Magnetic Field and Its Effects
- The region created by Earth's magnetic field extending into space is called the magnetosphere. It protects the planet from solar wind and cosmic radiation.
- If a planet loses its magnetic field, it becomes vulnerable to solar winds, leading to atmospheric loss and potentially rendering it inhospitable to life, as seen with Mars.
Magnetic and Geographic Poles
- Earth's magnetic poles are not located at the same points as the geographic poles. The magnetic poles shift over time and are currently situated in different locations.
- The magnetic north pole is located in the Arctic region and differs from the geographic north pole, which is at 90 degrees north latitude.
Terminology and Protection from Solar Radiation
- The invisible lines representing Earth's magnetic field are called magnetic field lines. They indicate the direction and strength of the magnetic force at various points.
- The Earth's magnetic field acts as a shield against charged particles from the sun, known as solar wind. This interaction creates phenomena such as the auroras.
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