The entire mass of air that surrounds Earth, and is made of 78% nitrogen, 21% oxygen, and traces of other gases is called...

• magnetosphere

• ozone layer

• atmosphere

• none of these

An area that deflects and traps harmful particles, and results from the interaction between Earth's magnetic field and solar winds is called...

• atmosphere

• ozone layer

• magnetic fields

• magnetosphere

Which of these is a portion of the electromagnetic spectrum emitted by the Sun that can cause sun burns.

• Ultraviolet Radiation

• Ozone Layer

• Solar Winds

A gas in Earth's atmosphere that absorbs MOST of the damaging high-energy ultraviolet radiation from the Sun is the...

• magnetosphere

• atmosphere

• solar winds

• ozone layer

A continuous stream of charged particles from the Sun, some variations cause aurorae displays and geomagnetic storms- these are called...

• ultraviolet radiation

• solar winds

• magnetospheres

• ozone layers

Magnetic lines of force from Earth's polar north and south; they act like a giant magnet- known as...

• the magnetosphere

• Earth's Magnetic Field

• the Magna Doodle

• the magnetic poles

If the Earth were any closer to the Sun, how would conditions for life on Earth change?

• The conditions would be too cold to support life.

• The conditions would be too hot to support life.

• The conditions would be exactly the same.

Which of the following is a reason that life exists on Earth?

• distance from the Sun

• presence of an atmosphere and magnetic field

• liquid water

• all of these are reasons life exists on Earth

Why is Earth's magnetic field important to the survival of life?

• the magnetic field holds in oxygen, nitrogen, argon and carbon dioxide

• the magnetic field is a like a bubble around the Earth

• the magnetic field shields Earth from harmful particles that stream from the Sun

The atmosphere helps keep Earth's temperatures stable and it contains oxygen for breathing.

• True

• False