The Earth in Space 1.2

Rotation

• the action of one object moving completely around another in an orbital path

• an imaginary line that runs through both poles of a planet

• turning or spinning on an axis

• the path an object, such as a planet, takes as it revolves around another object

Revolution

• turning or spinning on an axis

• an imaginary line that runs through both poles of a planet

• the path an object, such as a planet, takes as it revolves around another object

• the action of one object moving completely around another in an orbital path

axis

• an imaginary line that runs through both poles of a planet

• an object that orbits another object in space

• the path an object, such as a planet, takes as it revolves around another object

• the air that surrounds Earth

orbit

• the action of one object moving completely around another in an orbital path

• the path an object, such as a planet, takes as it revolves around another object

• turning or spinning on an axis

• the rising and falling of the ocean's surface

satellite

• an object that orbits another object in space

• a large hole in the ground caused by an asteroid

• the air that surrounds the Earth

• a science tool used for observing very distand objects in space

solar system

• each of the four divisions of the year marked by particular weather patterns and daylight hours

• the shape of the lit part of the moon as seen from Earth

• the eight planets, the moons, and other objects that orbit the Sun

• the partial or total blocking of light of one object by another

What 2 planets are the closest to the sun?

• Mars

• Earth

• Mercury

• Venus

How long does it take Earth to make one revolution around the sun?

• 24 hours

• 365 days

• 365 1/4 days

• 60 minutes

The day with the fewest hours of sunlight is called the _________.

• summer solstice

• winter solstice

• fall solstice

• spring solstice

Spring and Autumn each begin on a day that falls between the 2 solstices. These 2 days are called ___________.

• Tropics

• Eclipses

• Equinoxes

• Midlatitudes