Sun-Earth-Moon System

Equator

• An imaginary circle around the middle of the earth, halfway between the North Pole and the South Pole
• the daily rise and fall of sea level
• the central, darker part of a shadow where light is totally blocked

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-6

Equinox

• the lighter part of a shadow where light is partially blocked
• The two days of the year on which neither hemisphere is tilted toward or away from the sun
• occurs when the Moon's shadow appears on Earth's surface

Tags

NGSS.MS-ESS1-1

lunar eclipse

• occurs when less of the Moon's near side is lit each night
• occurs when the Moon moves into Earth's shadow
• a day when Earth's rotation axis is the most toward or away from the Sun

Tags

NGSS.MS-ESS1-1

Maria

• Dark, flat areas on the moon's surface.
• The two days of the year on which neither hemisphere is tilted toward or away from the sun
• a day when Earth's rotation axis is the most toward or away from the Sun

Tags

NGSS.MS-ESS1-1

orbit

• lit part of the Moon or a planet that can be seen from Earth
• occurs when less of the Moon's near side is lit each night
• The path an object follows as it moves around another object

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Penumbra

• the lighter part of a shadow where light is partially blocked
• the daily rise and fall of sea level
• the central, darker part of a shadow where light is totally blocked

Tags

NGSS.MS-ESS1-1

phase

• occurs when the Moon's shadow appears on Earth's surface
• Dark, flat areas on the moon's surface.
• lit part of the Moon or a planet that can be seen from Earth

Tags

NGSS.MS-ESS1-1

Revolution

• occurs when less of the Moon's near side is lit each night
• The movement of an object around another object
• The spinning motion of a planet on its axis

Tags

NGSS.MS-ESS1-2

Rotation

• The spinning motion of a planet on its axis
• the central, darker part of a shadow where light is totally blocked
• occurs when the Moon's shadow appears on Earth's surface

Tags

NGSS.MS-ESS1-1

rotation axis

• lit part of the Moon or a planet that can be seen from Earth
• The two days of the year on which neither hemisphere is tilted toward or away from the sun
• the line on which an object rotates