If you look up at the night sky long enough, the stars will appear to move across the sky. What is responsible for making the stars appear to move across the sky at night? A. Earth's Revolution

B. Earth's rotation on its axis

C. Earth's position in its orbit

D. Earth's distance from the sun

Solar energy is energy from the sun that is converted into thermal or energy. a. nuclear b. mechanical c. electrical d. chemical

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

Explain how to convert from one unit to another in the metric system.