Question

An electric field with an average magnitude of about 150 n/c points ________ in the atmosphere near Earth's surface?

1) upward
2) downward
3) sideways
4) cannot be determined

Answer 1

The electric field in the atmosphere near Earth's surface points downward and is caused by the interaction between the Earth's net charge and the ionosphere.

Step-by-step explanation:

The electric field in the atmosphere near Earth's surface points downward. This electric field is caused by the interaction between the Earth's net charge and the ionosphere, which is positive during fair weather while the Earth is largely negative. The magnitude of the electric field is approximately 150 N/C, and it increases slightly as we get closer to the surface.