Why does an astronaut weigh less on the Moon than on Earth?
A) The astronaut has less mass on the Moon.
B) The astronaut is farther from Earth's center.
C) The gravitational field strength is less on the Moon's surface than on Earth's surface.
D) The astronaut is in a state of free-fall.

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Ahydrogen atom has 1 electron. how many bonds can hydrogen form? a) 1 b) 2 c) 3 d) 4 e) 5

What are fossils of organisms that existed over a wide area but only for a limited time period called?