Astronomy

Front 1

The rise and fall of water

Back 1

Tide

Front 2

When the sun is directly overhead at the equator

*March and December

Back 2

Equinox

Front 3

The study of the moon, stars, and other objects in space

Back 3

Astronomy

Front 4

The earth's path as the revolves around the sun

Back 4

Orbit

Front 5

One of the different shapes of the moon as seen fron earth.

Back 5

Phase

Front 6

Larger shadow around the umbra

Back 6

Penumbra

Front 7

Occurs at full moon when the earth is directly bettween the moon and the sun

Back 7

Lunar Eclipse

Front 8

When the moon passes between Earth and the sun, blocking the sunlight fron reaching the Earth.

Back 8

Solar Eclipse

Front 9

The Force that pulls objects on earth together

Back 9

Gravity

Front 10

Tide with lest differences between low and high tide

Back 10

Nap tide

Front 11

Combined forces that produce a tide with the greatest difference between low and high tide.

Back 11

Spring Tide

Front 12

Occurs around September 23 making the beginning of fall in the North Hemisphere.

Back 12

Autumnal Equinox

Front 13

When the noon sun is overhead at either 23.5 S or 23.5 N

*Both June and December

Back 13

Solstice

Front 14

Imaginary line that passes through Earth's center and the North and South poles

Back 14

Axis

Front 15

Measurement of distance from the equator expressed in degrees North and South

Back 15

Longitude

Front 16

Movement of one object around another.

Back 16

Revolution

Front 17

Umbra

Back 17

Darkest part of a moon's shadow.

Front 18

Vernal Equinox

(spring equinox)

Back 18

Occurs around March 21, and marks the beginning of Spring in the Northern Hemisphere.

Front 19

Eclipse

Back 19

When an object in space comes between the sun and a third object, and casts a shadow onthat object.

Front 20

Rotation

Back 20

Earth's spinning on it's axis

Front 21

The posistions of the moon, earth, and the sun.

Back 21

What causes the phases of the moon, eclipse, and tides.

Front 22

How much of the sunlit side of the moon faces Earth

Back 22

Phases of the moon you see depend on what.

Front 23

Eclipse

Back 23

When the moon's shadow hits Earth of Earth's shadow hits the moon a _____ occurs.

Front 24

Tides occur why?

Back 24

Mainly becasue of differences in how much the moon pulls on different parts of Earth.

Front 25

Why are there seasons?

Back 25

Because Earth's axis is tilted as it moves around the sun.

Front 26

What causes day and night?

Back 26

Earth's Rotation