When andrew pokes the marble, he gives it force. as the marble rolls down the ramp, force pulls it down. the movement of the marble is slowed down by from the ramp.

The process in which the nucleus of an atom splits into two lighter atoms, releasing a large amount of energy is nuclear

Hydroelectricity provides about 7 percent of the electricity generated in the united states. (a) explain how a hydroelectric power plant converts energy stored in water into electricity. (b) identify two factors that determine the amount of electricity that can be generated by an individual hydroelectricity power plant. (c) describe the two main types of land-based hydroelectric power plants. (d) describe two economic advantages and two environmental disadvantages of hydroelectricity.

Carbon tetrachloride (ccl4) is ionic or convalent