More cards in this set

The human ear can detect sound waves with frequencies between which two values?

What are sound waves with a higher frequency than 20000Hz called?

What reflects ultrasound waves?

Are ultrasound waves ionising?

Are x-rays ionising?

What can workers wear to make them safer when working with x-rays?

Can x-rays also be used to detect cancerous tumors?

What can ultrasound waves do to kidney stones?