Which color of light has the shortest wavelength?

What type of energy is stored in a stretched rubber band?

Which scientist discovered the law of universal gravitation?

Which of these is a good conductor of electricity?

What do we use to measure time?

Which type of mirror makes objects look bigger?

Which planet has the strongest gravity?

What is the boiling point of water in Celsius?

Which of the following is a unit of frequency?

Which gas is used in electric bulbs?