What causes thunder?

a. static electricity in the air

b. the sudden heating of the air by a lightning bolt

c. the movement of raindrops and hail within the cloud

d. the formation of raindrops out of rapidly condensing water vapor?

Which paint can has greater potential energy after the painter carries it up the ladder? Why is this can's potential energy greater? How could the painter give the other can more potential energy?

How can you use a graph to represent the motion of an object?

Which transfer of energy does NOT require matter?

A bullet is fired upwards with the initial velocity of 250m/s. determine the time taken to reach the maximum height

The temperature scale used in most of the world is the ...

Which of the following describes the products of a chemical reaction? A. The original materials B. The chemicals on the right side of a chemical equation C. The chemicals on the left side of a chemical equation D. The substances that are changed

What does it mean when we say an atom has decayed?

The first excited state of a particular atom in a gas is 5.2 eV above the ground state. A moving electron collides with one of these atoms, and excites the atom to its first excited state.

How do your teeth work as a wedge?

According to the Big Bang theory timeline, all matter and energy was compressed into a very small volume at an extremely high temperature. a. True b. False