Light is a form of

electromagnetic radiation that travels in waves

electromagnetic radiation that does not move

sound energy that travels in waves

sound energy that does not move

Which of the following statements about stars is true? A.) All stars are the same temperature B.) None of these C.) Stars rarely differ in temperature D.) Stars vary greatly in temperature

Which layer of the earth do scientists think is made mostly of metal? A) The inner core B) Crust C) the lithosphere D) the upper mantal

Which piece of information provided the stimulus for the shift from traditional classification to modern classification?

Name and describe saturn's largest satellite

Which of the following is not true of density? a. density depends on mass and volume. b. density describes how tightly packed the particles are. c. density changes with gravity.

Describe how a flu vaccine the human body?

Adults do not need foods from the dairy group, only growing children and athletes do.

The principle role for sugars in living things is to

Under which condition is competition among fish most likely

What converts energy from sunlight to chemical energy in a cell?