Marie and Pierre Curie coined which term to describe the ability of certain elements to give off radiation spontaneously?

Question

AM signals travel as changes in ____

Why does the wave of light bend toward the normal as it enters water?

The Curies discovered which two elements?

Light waves strike a lamp shade. Which property of light is demonstrated?

Certain seismic waves travel as ____

ANSWER PLEASE

Answer 1

Apparently you didn't read this before you posted these questions.

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Answer 2

oh sorry well TOO BAD

Answer 3

I actually need help with number 1

1.
a. fluorescence
b. rarefaction
c. radioactivity**
d. electromagnetic

Could you tell me if this is right?

Answer 4

Do you know what #3 is?