Quiz on Plasma

What is plasma?

• A solid form of matter

• A liquid state of matter

• An ionized gas and the fourth state of matter

• A type of molecular bond

What region of the atmosphere forms plasma due to the Sun's ultraviolet radiation?

• Troposphere

• Stratosphere

• Ionosphere

• Mesosphere

The ionosphere protects Earth from excessive ultraviolet radiation.

• True

• False

Controlled thermonuclear fusion occurs spontaneously under normal temperature and pressure.

• True

• False

Over 99% of the visible universe is made up of plasma.

• True

• False

Plasma is described as:

• A gas with only neutral particles

• A system of charged particles with collective behavior

• A solid material with high energy

• A mixture of liquids and solids

What percentage of the universe is made up of plasma?

• Less than 50%

• About 75%

• Over 99%

• About 25%

What happens to gas molecules when temperature increases?

• They turn into plasma due to ionization

• They freeze

• They become liquid

• They stop moving

What is the main source of plasma in space?

• The Sun

• The Earth

• The Moon

• The ocean

Which of the following is an example of plasma on Earth?

• Lightning

• Water

• Rocks

• Trees