Which of the following correctly compares uv rays and x-rays? a) x-rays have the same wavelength as uv rays. b) uv rays have the same energy as x-rays. c) x-rays have a higher frequency. d) uv rays have lower energy.

Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.

The goal of this experiment was to answer the question "what is the effect of a gas' temperature on its volume? " you formulated the hypothesis below. hypothesis: if a fixed amount of gas is heated, then the volume will increase because the heat will cause the molecules of gas to move faster and further apart. to test this hypothesis, you changed the of the gas between 0 and 100°c (273 and 373 k) and calculated the resulting of the gas.

Which of the following is a pure substance? airbloodcopperwood