The Earth's gravitational pull extends as far out as... a. The highest mountain on Earth, but no farther b. The moon, but no farther C. The edge of the solar system, but no farther The entire universe! 2. Newton's Law of Universal Gravitation shows that gravitational forces are proportional to 1/r?, and thus, serves as an example of a(n) a. Universal Law b. Inverse Law Inverse Square Law d. Municipal Law 3. Astronauts in the International Space Station (ISS) experience weightlessness in their orbit around the Earth. This is because a. The Earth's gravitational pull doesn't exist outside the Earth's atmosphere b The ISS, and the astronauts in it, are in free-fall C. The ISS is so far away from the Earth that gravitational forces are negligible d. Everything in space is weightless 4. The gravitational force due to the a. Sun Moon is the primary cause of the tides. C. Supermassive black hole at the center of our galaxy 5. Generally speaking, there are 2 C. d. 4 high tides per day in a given location. 2 high tides in ore day 6. The tides don't occur at the same time every day because a. The Earth spins on its axis The moon revolves around the Earth C. The Sun orbits the black hole at the center of our galaxy d. The Sun pulls on the Earth harder than the moon does 7. When spring tides occur b. High tides are higher than average and low tides are lower than average C. Low tides are higher than average and high tides are lower than average Both high tides and low tides are higher than average d. It must be March, April, May, or June

Space and Gravity Exam

Earth's Orbit

The path the Earth follows as it revolves around the Sun

Gravitational Field Strength

The force experienced by an object due to gravity at a specific point

Einstein's E=mc²

The equation that relates energy (E) to mass (m) and the speed of light (c)

Spring Tide

A tide with the greatest difference between high and low tide, occurring during the full moon and new moon

Neap Tide

A tide with the least difference between high and low tide, occurring during the first and third quarters of the moon

Solar Eclipse

When the Moon passes between the Sun and Earth, blocking the Sun's light

Formation of Stars

Stars are created in large clouds of dust and gas

Ultimate Fate of the Sun

The Sun will become a white dwarf

Theory of Special Relativity

Theory that describes how time and space are relative and not absolute

Time Dilation

The difference in elapsed time measured by two observers due to relative motion or gravity