Vocabulary
Earth-centered Model
What is Geocentric?
This phase is the beginning of the lunar cycle.
What is new moon?
He discovered moons around Jupiter to prove Earth is not in the center of the solar system.
Who is Galileo?
A giant ball of superheated gas composed of hydrogen and helium.
What is a star?
One of the days of the year when the sun appears highest in the sky.
What is a Solstice?
The movement of one object around another.
What is a Revolution?
The phase that comes after Full Moon.
What is Waning Gibbous?
He believed that the Earth was the center of the solar system and thought the orbits made circles as they moved around the Earth.
Ptolemy
A cold mixture of dust and ice that develops a long trail of light as it approaches the sun.
What is a comet?
This day occurs when the sun passes directly overhead at the equator at noon.
What is an Equinox?
The force that attracts all objects toward each other.
What is Gravity?
This word means growing (the light on the moon is growing).
What is Waxing?
He discovered that each planet's orbit made an ellipse instead of a circle.
Who is Kepler?
A streak of light produced when a small piece of rock burns up as it enters the Earth's atmosphere.
What is a Comet?
The area of the shadow in an eclipse where the sun is only partially blocked by the sun.
What is a Penumbra?
Tendency of an object to resist a change in motion.
What is Inertia?
What we call the side of the moon that we cannot see (not a phase).
What is the far side (or dark side) of the moon?
He proved that Earth's rotation and revolution around the sun explained the heliocentric model.
Who is Copernicus?
A pattern or group of stars that people imagine represents a figure, animal or object.
What is a Constellation?
A tide with the least difference between low and high tides that occurs during the 1st and last quarter moon phases.
What is a Neap tide?
The rise and fall of ocean water that occur every 12.5 hours.
What are Tides?
The amount of days in one lunar cycle.
What is 29.5 days?
He was one of the first scientists to propose that the Earth was the center of the solar system.
Who is Aristotle?
How distance between 2 planets affect gravity.
What is the closer the planets are the stronger the gravity is on the planet?
OR
The further apart the planets are, the weaker the force of gravity is on the planet.
This law states that every object in the universe attracts every other object.
What is the Law of universal gravitation?