An imaginary line that passes through Earth's center, around which the Earth spins
Axis
Caused by the tilt of the Earth on its axis as it revolves around the Sun
Season
When the Moon appears to get smaller
Waning Moon
The moon's illuminated side faces Earth and appears as a fully lit disk.
Full Moon
A bright light that does not shine directly
Indirect Sunlight
An event happens when the moon is between Earth and the Sun, and the moon's shadow falls on Earth.
Solar Eclipse
The rise and fall of the level of water in the ocean
Tide
When the Moon appears to get bigger
Waxing Moon
to go around something in a circle; to turn around in a circle
Revolve
The total amount of "stuff" or matter inside an object.
Mass
An event that happens when Earth is between the sun and the moon and Earth's shadow falls on the moon.
Lunar Eclipse
a type of super-high tide that happens twice a month during a full or new moon
Spring Tide
A moon that is completely dark because its unlit side is facing Earth
New Moon
The path of an object as it revolves around another object in space.
Orbit
a measure of how heavy an object is, determined by the pull of gravity on it
Weight
The forces are determined by the mass of an object.
Gravitational Forces
The tide with the least difference between consecutive low and high tides
Neap Tide
Less than half of the moon is visible from Earth.
Crescent Moon
Exactly half of the Earth, similar to cutting an orange or a ball in half.
Hemisphere
small, airless, rocky, or metallic bodies that orbit the Sun, primarily located in the main asteroid belt between Mars and Jupiter.
Asteroid
To turn around an axis or center point
Rotation
The changes shapes of the moon are caused by its 29.5 day orbit around the Earth.
Moon Phases
The shape of the Moon is greater than a quarter moon, but not full.
Gibbous Moon
When light travels straight from the sun to you without being blocked by clouds, trees, or buildings
Direct Sunlight
our "space neighborhood," consisting of the Sun and everything that travels around it due to gravity, including eight major planets (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune), dwarf planets, moons, and asteroids. It is located in the Milky Way galaxy.
Solar System