Whatever comes up must go down
The force that attracts all objects towards each other.
Gravity
A celestial body orbiting the earth or another planet.
Satellite
(true or false) Geocentric Model with the earth at the center of the solar system is the correct model of the solar system. While the Heliocentric Model with the sun at the center of the solar system is the incorrect model of the solar system.
false
The natural rotation of Earth around the sun forms the basis for the astronomical calendar, in which we define _________ with two solstices and two equinoxes.
Seasons
Earth’s Natural Satellite
The Moon
To give a possible but not yet proven explanation for something.
Hypothesized
A ___________ is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for itself-gravity to overcome rigid body forces so that it assumes a nearly round shape, and (c) has cleared the neighborhood around its orbit.
Planet
He began to observe that planets did not move in a circle around the sun.
Tycho Brahe
The day the Sun is highest in the sky. The _________ happens when the Northern and Southern Hemisphere is at its strongest tilt towards the sun
Solstice
The part of a shadow surrounding the darkest part.
Penumbra
The tendency of an object to resist a change in its Motion.
Inertia
A ________ is a streak of light in the sky caused by a meteoroid crashing through Earth's atmosphere
meteor
His calculations proved that the shape of a planet’s orbit is an ellipse, not a circle.
Johannes Kepler
Halfway between the solstices, neither hemisphere is tilted toward the sun. The day and night are both 12 hours
Equinox
The darkest part of a shadow.
Umbra
Every object in the universe attracts each other every other object.
Law of Universal Gravitation
__________ are cosmic snowballs of frozen gases, rock, and dust that orbit the Sun.
Coments
He said Earth’s rotation and revolution around the sun explained stars moving.
Nicolaus Copernicus
The Earth path around the sun.
Orbit
The Moon and Earth exert a gravitational pull on each other. On Earth, the Moon's gravitational pull causes the oceans to bulge out on both the side closest to the Moon and the side farthest from the Moon.
Tides
(true or false) The sun shine more directly on Earth’s Northern Hemisphere during the summer months because The tilt of Earth's axis tips the Northern Hemisphere toward the sun.
true
A pattern or group of stars that people imagine represents a figure, animal, or object is a_________.
Constellation
He was an ancient Greek scientist who first developed a heliocentric model.
Aristarchus
The spinning of Earth on its axis is ____________. While the movement of one object around another is called what_________________.
Rotation, Revolution
True or False: When the moon passes directly between the sun and Earth and blocks the sun's light, it is called a solar eclipse. When Earth is directly between the moon and sun, it is called a(n) lunar eclipse.
True