Astrophysical Plasmas

Description: Astrophysical Plasmas Quiz
Number of Questions: 15
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Tags: astrophysics plasma physics
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What is the most common type of plasma in the universe?

  1. Hydrogen plasma

  2. Helium plasma

  3. Carbon plasma

  4. Oxygen plasma


Correct Option: A
Explanation:

Hydrogen is the most abundant element in the universe, so it is also the most common type of plasma.

What is the temperature of the solar corona?

  1. 1 million Kelvin

  2. 10 million Kelvin

  3. 100 million Kelvin

  4. 1 billion Kelvin


Correct Option: A
Explanation:

The solar corona is the outermost layer of the Sun's atmosphere, and it has a temperature of about 1 million Kelvin.

What is the density of the interstellar medium?

  1. 1 atom per cubic centimeter

  2. 10 atoms per cubic centimeter

  3. 100 atoms per cubic centimeter

  4. 1,000 atoms per cubic centimeter


Correct Option: A
Explanation:

The interstellar medium is the matter that exists between stars in a galaxy, and it has a density of about 1 atom per cubic centimeter.

What is the cause of the aurora borealis?

  1. Solar wind interacting with the Earth's magnetic field

  2. Volcanic eruptions

  3. Earthquakes

  4. Tsunamis


Correct Option: A
Explanation:

The aurora borealis is caused by the interaction of the solar wind with the Earth's magnetic field.

What is the name of the process by which plasma is created?

  1. Ionization

  2. Recombination

  3. Dissociation

  4. Attachment


Correct Option: A
Explanation:

Ionization is the process by which plasma is created. It occurs when an atom or molecule loses or gains electrons.

What is the name of the force that confines plasma in a magnetic field?

  1. Lorentz force

  2. Coulomb force

  3. Gravitational force

  4. Weak nuclear force


Correct Option: A
Explanation:

The Lorentz force is the force that confines plasma in a magnetic field. It is a combination of the electric and magnetic forces.

What is the name of the instability that can occur in a plasma when the temperature gradient is too steep?

  1. Kelvin-Helmholtz instability

  2. Rayleigh-Taylor instability

  3. Jeans instability

  4. Weibel instability


Correct Option: B
Explanation:

The Rayleigh-Taylor instability is the instability that can occur in a plasma when the temperature gradient is too steep. It is caused by the buoyancy force acting on the plasma.

What is the name of the phenomenon that occurs when a plasma is heated to a very high temperature?

  1. Thermonuclear fusion

  2. Nuclear fission

  3. Radioactive decay

  4. Beta decay


Correct Option: A
Explanation:

Thermonuclear fusion is the phenomenon that occurs when a plasma is heated to a very high temperature. It is the process by which stars produce energy.

What is the name of the type of plasma that is used in fluorescent lights?

  1. Mercury plasma

  2. Neon plasma

  3. Argon plasma

  4. Krypton plasma


Correct Option: A
Explanation:

Mercury plasma is the type of plasma that is used in fluorescent lights. It is produced by passing an electric current through mercury vapor.

What is the name of the type of plasma that is used in plasma displays?

  1. Xenon plasma

  2. Neon plasma

  3. Argon plasma

  4. Krypton plasma


Correct Option: A
Explanation:

Xenon plasma is the type of plasma that is used in plasma displays. It is produced by passing an electric current through xenon gas.

What is the name of the type of plasma that is used in ion thrusters?

  1. Argon plasma

  2. Krypton plasma

  3. Xenon plasma

  4. Helium plasma


Correct Option: C
Explanation:

Xenon plasma is the type of plasma that is used in ion thrusters. It is produced by passing an electric current through xenon gas.

What is the name of the type of plasma that is used in fusion reactors?

  1. Deuterium plasma

  2. Tritium plasma

  3. Helium plasma

  4. Lithium plasma


Correct Option: A
Explanation:

Deuterium plasma is the type of plasma that is used in fusion reactors. It is produced by passing an electric current through deuterium gas.

What is the name of the type of plasma that is used in particle accelerators?

  1. Hydrogen plasma

  2. Helium plasma

  3. Argon plasma

  4. Krypton plasma


Correct Option: A
Explanation:

Hydrogen plasma is the type of plasma that is used in particle accelerators. It is produced by passing an electric current through hydrogen gas.

What is the name of the type of plasma that is used in plasma cutters?

  1. Argon plasma

  2. Oxygen plasma

  3. Nitrogen plasma

  4. Hydrogen plasma


Correct Option: A
Explanation:

Argon plasma is the type of plasma that is used in plasma cutters. It is produced by passing an electric current through argon gas.

What is the name of the type of plasma that is used in plasma torches?

  1. Hydrogen plasma

  2. Oxygen plasma

  3. Nitrogen plasma

  4. Argon plasma


Correct Option: A
Explanation:

Hydrogen plasma is the type of plasma that is used in plasma torches. It is produced by passing an electric current through hydrogen gas.

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