A cement block has more kinetic energy than a grain of sand.
True or False

Iwll give extra points to who gets this for ! what type of reaction is this? ?

How do scientists think that gravity affected the formation of our solar system?

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter