How does light travel?
a. light only travels in a vacuum and travels faster when the sound source is moving.
b. light only travels in a medium and light travels faster when a sound source is stationary.
c. light can travel in a vacuum and the speed varies depending on whether the source is moving or stationary.
d. light can travel in the air or a vacuum and the speed is constant whether the light source is stationary or moving.

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

This punnett square shows the cross between two pants. one parent has round seeds (rr). and the other parent has wrinkled seeds (rr) which best describes their offspring as shown in this cross?

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.