ch 20 - pt 1

Question 1

A region of a planetary crust where a tectonic plate slides downward.

Answer 1

Subduction zone

Question 2

In Earth’s atmosphere, a layer of oxygen ions lying 15 to 30 km high that protects the surface by absorbing ultraviolet radiation.

Answer 2

Ozone layers

Question 3

The constant destruction and renewal of Earth’s surface by the motion of sections of crust.

Answer 3

Plate tectonics

Question 4

One of the radiation belts of high-energy particles trapped in Earth’s magnetosphere.

Answer 4

Van Allen Belts

Question 5

The volume of space around a planet within which the motion of charged particles is dominated by the planetary magnetic field rather than the solar wind.

Answer 5

magnetosphere

Question 6

The boundary between the undisturbed solar wind and the region being deflected around a planet or comet.

Answer 6

Bow shock

Question 7

A material with the properties of a solid but capable of flowing under pressure.

Answer 7

Plastic