Q: Q: What happens when materials return to their original shape? Choices: - reverberation - second life - restoration principle - elastic rebound A:
A: elastic rebound

Q: Q: When do the eggs in a female's ovaries start to mature? Choices: - maturity - adolescence - adulthood - puberty A:
A: puberty

Q: Q: Like the strings of cello, anything that vibrates produces waves of what? Choices: - heating - light - sound - energy A:
A: energy

Q: Q: What is the opening in the front of the eye called? Choices: - lens - cornea - iris - pupil A:
A: pupil