What is the frequency for Ultrasound?

Which of these is NOT a use of Ultrasound?

Why do we use Ultrasound waves used to look at a foetus?

What is the best protections for people working in a noisy environment?

What do we call the continuous spectrum of radiation that is emitted from the Sun?

Which parts of the electromagnetic spectrum can our eyes detect?

What key term do we call this- Waves with a higher frequency can knock electrons out of atoms in living cells.

Waves with a low frequency and energy have a heating effect. Which waves are these?

Which of the waves in the electromagnetic spectrum are ionising?

Which of the electromagnetic spectrum could be used fro mobile phone signals?