During a phase change, the temperature of a substance

A. increases.

B. decreases.

C. does not change.

D. increases or decreases.

Name of group to which hydrogen belongs to

How many times louder is a sound wave with an intensity of 50 dB than a sound wave with an intensity of 20 dB?

As a wavelength decreases the crest of the wave A. become wider B. become shorter C. get lose together D. get farther apart

This is what occurs when matter transitions between solid, liquid and gas.

You slide a coffee mug across the table. The mug slides to the east and slows down while sliding. Which of the following statements best describes the net force acting on it? O The net force is zero. O The net force is directed east.

How fast or slow an object is moving and in what direction

Which paragraph shows the correct relationship between kinetic energy and speed?

At which position does the diver have the most gravitational potential energy

The visible light spectrum ranges between A. radar waves and X-rays. B. ultraviolet rays and gamma rays. C. infrared rays and ultraviolet rays. D. television waves and infrared rays.

Sarah added sugar to her iced tea, but it is not dissolving very quickly. Which can Sarah do to make the sugar dissolve faster? Add more sugar. Heat the tea. Add more ice.