Luis wants to compare the density of three solid objects that are different shapes and sizes. What information does he need to make the comparison?

Which is not a step in the rock cycle?

When an object is heated it contracts. a. true b. false

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.