True of the ionosphere

Exercise and reference answers

Questions

1. Items

   1. Text

      80-400 km up

      Matches the category

      Yes

   2. Text

      Charged ions

      Matches the category

      Yes

   3. Text

      Radio reflector

      Matches the category

      Yes

   4. Text

      Has ozone layer

      Matches the category

      No

   5. Text

      Lowermost layer

      Matches the category

      No

   6. Text

      13 km average

      Matches the category

      No

   Category

   True of the ionosphere

Instructions

Tap every item that fits the category. Leave the rest.

Explanation