Sjha 6 Sci Chap 2.1

Front 1

FALSE

Back 1

True or False - The earth is the center of the universe

Front 2

24 hours

Back 2

the earth makes a full rotation every _____

Front 3

365.25 days or one year

Back 3

How long does it take the earth to revolve around the Sun one time

Front 4

AU [astronomical unit]

Back 4

the average distance between earth and the sun; one of these is approximately 150 million km

Front 5

AU [astronomical unit]

Back 5

scientists often use this form of measurement to measure distance to planets and other objects within the solar system

Front 6

axis

Back 6

the imaginary rod pushed through the center of the earth, from the north pole to the south pole

Front 7

closest

Back 7

In early January, earth is farthest or closest to the Sun

Front 8

craters

Back 8

Asteroids and comets crashed into the moon causing ___ to form

Front 9

Earth

Back 9

during a solar eclipse a small part of the _____ is in the moon's shadow

Front 10

Earth's

Back 10

The sun's diameter is 100 times greater than __ and 10 times greater than Jupiter

Front 11

eclipse

Back 11

the movement of one solar system object into the shadow of another object

Front 12

elliptical

Back 12

A word that means nearly round

Front 13

equinox

Back 13

when earth's rotation axis is tilted neither toward nor away from the sun

Front 14

equinox

Back 14

this word means equal night

Front 15

FALSE - the moon reflects sunlight

Back 15

The moon creates its own light

Front 16

far side

Back 16

the side of the moon that does not face the earth

Front 17

farthest

Back 17

In early July, earth is farthest or closest to the Sun

Front 18

gravitational pull

Back 18

Objects in the solar system orbit the Sun because it has a huge __ ___

Front 19

gravitational pull

Back 19

The earth is moving around the Sun because of the sun's __ ___

Front 20

higher

Back 20

when the earth and moon are in line with the sun, the sun's gravitational pull adds to the moon's gravitational pull making high tides [higher or lower] than usual

Front 21

January

Back 21

In which month is the earth closest to the sun - January or July

Front 22

June and December

Back 22

In what months do solstices happen?

Front 23

largest

Back 23

locations on the earth closest and farthest from the moon undergo the [largest or smallest] tidal effect

Front 24

lunar

Back 24

A _____ eclipse can only occur during a full Moon

Front 25

moon

Back 25

Many scientists believe that the ___ was created after the earth collided with a Mars sized object

Front 26

moon

Back 26

what has a greater impact on the earth's tides - the sun or the moon

Front 27

moon

Back 27

During a Lunar eclipse the earth's shadow completely or partially a overs the ___

Front 28

neap

Back 28

during the first and third quarter moon, the gravitational pull of the moon is perpendicular to the gravitational pull of the sun, therefore, high tides are lower than usual; these tides are called ___ tides

Front 29

revolution

Back 29

The orbit of an object around another object

Front 30

rock

Back 30

The moon is approximately 1/4 the size of earth; it is a dry, airless object made mostly of ___

Front 31

rotation

Back 31

the spin of an object around its axis

Front 32

rotation

Back 32

the eath's ____ is causes day and night

Front 33

Seasons

Back 33

These occur because the earth's tilt does not change as the earth orbits the sun

Front 34

September

Back 34

An equinox occurs two days of the year, one in March and one in ____

Front 35

solar

Back 35

___ eclipse can only a occur during a new moon

Front 36

solstice

Back 36

when the earth's Rotation axis is tilted directly toward or  away a from the sun

Front 37

spring/fall

Back 37

The days of the equinox are used to signify the beginning of __ or ___

Front 38

spring tides

Back 38

_____ tides occur during the full moon and new moon phases

Front 39

summer/winter

Back 39

when the north pole is toward the Sun, the northern hemisphere is experiencing ____ and the southern hemisphere is experiencing ____

Front 40

Sun

Back 40

The ___ is one of billions of stars that make up the Milky Way galaxy.

Front 41

Sun

Back 41

This object contains more than 99% of the solar system's mass and is the biggest object in the solar system.

Front 42

tides

Back 42

the periodic rise and fall of the oceans surfaces caused by the gravitational  force between the earth and the moon and the sun

Front 43

waning

Back 43

As the lit portion of the moon becomes smaller, we say the moon is __

Front 44

waning gibbous, last quarter and waning crescent

Back 44

What are the waning phases of the moon

Front 45

waxing

Back 45

As the lit portion of the moon becomes larger, we say the moon is ____

Front 46

Waxing Crescent, first quarter and waxing gibbous

Back 46

What are the waxing phases of the moon

Front 47

TRUE

Back 47

True or False - the tilt of the earth's axis does not change

Front 48

TRUE

Back 48

The same side of the moon always faces the earth