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axis

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Title: axis


1
axis
  • Axis of rotation, line around which an object
    rotates Axis of symmetry, a line that divides a
    two-dimensional objec

2
Orbit
  • the curved path, usually elliptical, described by
    a planet, satellite, spaceship, etc., around a
    celestial body, as the sun.

3
orbit
  • The path of a celestial body or an artificial
    satellite as it revolves around another body.

4
rotation
  • a circular movement of an object around a center

5
revolution
  • It takes the Earth 365.25 days to go around the
    Sun. This is referred to as a revolution, and,
    combined with the tilt of the Earth on its axis,
    is what causes seasons

6
tilt
  • The tilt of the earth at 23.45

7
season
  • 1. one of the four periods of the year (spring,
    summer, autumn, and winter), beginning
    astronomically at an equinox or solstice,

8
equator
  • the Equator is an imaginary line on the Earth's
    surface equidistant from the North Pole and South
    Pole that divides the Earth into a Northern
    Hemisphere and a Southern Hemisphere. The
    latitude of the Equator is 0 (zero degrees). The
    length of Earth's equator is about
    40,008.629 kilometres (24,860.2 mi)

9
hemispheres
  • The earth is traditionally described in relation
    to its two halves or hemispheres, North and South
    of the Equator, an imaginary line circling the
    earth midway between its two poles.

10
solstice
  • an astronomical event that happens twice each
    year when the Sun's apparent position in the sky
    reaches its northernmost or southernmost extreme

11
equinox
  • occurs twice a year, when the tilt of the Earth's
    axis is inclined neither away from nor towards
    the Sun

12
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13
Aurora
  • is a natural light display in the sky,
    particularly in the polar regions, caused by the
    collision of charged particles directed by the
    Earth's magnetic field. An aurora is usually
    observed at night and typically occurs in the
    ionosphere. It is also referred to as a polar
    aurora or, collectively, as polar lights

14
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15
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16
Satellite
  • a device designed to be launched into orbit
    around the earth, another planet, the sun, etc to
    find information on the thing it is orbiting or
    send radio rays for cable, radio, GPS, etc

17
satelite
  • an object which has been placed into orbit by
    human endeavor. Such objects are sometimes called
    artificial satellites

18
Space Station
  • A large satellite equipped to support a human
    crew and designed to remain in orbit around Earth
    for an extended period and serve as a base for
    launching exploratory expeditions, conducting
    research, repairing satellites, and performing
    other space-related activities.

19
Meteorites
  • A stony or metallic mass of matter that has
    fallen to the earth's surface from outer space.

20
Asteroids
  • Any of numerous small celestial bodies that
    revolve around the sun, with orbits lying chiefly
    between Mars and Jupiter and characteristic
    diameters between a few and several hundred
    kilometers.

21
Moon(do you see the face on the moon called the
man on the moon)
  • The natural satellite of Earth, visible by
    reflection of sunlight and having a slightly
    elliptical orbit, approximately 356,000
    kilometers (221,600 miles) distant at perigee and
    406,997 kilometers (252,950 miles) at apogee.

22
Rotation
  • the act of rotating a turning around as on an
    axis.

23
Total Solar Eclipse
  • A Total Solar Eclipse occurs when the new Moon
    passes directly between the Sun and the Earth.
    Daytime briefly turns to an eerie darkness, and
    during these few precious minutes the wispy halo
    of the Suns corona, comes into view as the dark
    disk of the Moon totally obscures the bright Sun.

http//co-ops.nos.noaa.gov/astronomical.shtml
24
Solar Eclipse
  • When the moons shadow falls on the sun.

25
Total Lunar Eclipse
  • A total Lunar Eclipse occurs when the full Moon
    passes through the shadow of the Earth. In this
    case, the Sun and the Moon are on opposite sides
    of the Earth. A lunar eclipse is only visible at
    night time of certain full Moons. A lunar
    eclipse can last as long as an hour.

http//co-ops.nos.noaa.gov/astronomical.shtm
26
Lunar Eclipse
  • When the suns shadow falls on the moon.

27
Eclipse of the Moon
  • Lunar Eclipse is when the Earths shadow falls
    upon the moon.
  • Solar Eclipse is when the Moons shadow falls
    upon the Earth.
  • An eclipse occurs at those times when the Moon
    moves into a position of direct alignment with
    the Sun and the Earth.

28
Space Race
  • the competitive nature of the nations involved in
    space exploration

29
Neal Armstrong
  • In 1969, Neil Armstrong was commander of Apollo
    11, the first manned lunar landing mission.

30
Project Mercury
  • Project Mercury was the U.Ss first successful
    manned spaceflight program. It ran from 1959
    through 1963 with the goal of putting a man in
    orbit around the Earth.

31
Project Gemini
  • a two-person U.S. spacecraft designed for orbital
    rendezvous and docking used in 196566 in
    various experiments preparatory to a landing on
    the moon.

32
Project Apollo
  • Apollo 13 was the third manned lunar-landing
    mission, part of Project Apollo under the NASA in
    the United States. It launched on April 11, 1970.
    Two days after the launch, the Apollo spacecraft
    was crippled by an explosion.

33
Space probe
  • A spacecraft carrying instruments intended for
    use in exploration of the physical properties of
    outer space or celestial bodies other than Earth.

34
Space Probe
  • an unmanned spacecraft designed to explore the
    solar system and transmit data back to earth.

35
Space Shuttle
  • A reusable spacecraft with wings for controlled
    descent in the atmosphere, designed to transport
    astronauts between Earth and an orbiting space
    station and also used to deploy and retrieve
    satellites.

36
Astronomical Unit
  • A unit of length used in measuring astronomical
    distances within the solar system equal to the
    mean distance from Earth to the sun,
    approximately 150 million kilometers (93 million
    miles).Read more http//www.answers.com/topic/
    astronomical-unitixzz1BUQUup7x

37
Phases of the Moon
http//nssdc.gsfc.nasa.gov/planetary/lunar/images/
astflag.jpg
38
The Moon
  • The Moon is Earths one natural satellite and is
    more than ¼ the size of the Earth itself. Due to
    its smaller size and slower speed of rotation,
    the Moons gravity is 1/6 of the Earths gravity
    pull.

39
Revolution of the Moon
  • The Moon revolves around the Earth
  • The Earth revolves around the Sun
  • The Moon passes through phases during a cycle
    that repeats itself every 27.3 days.
  • As this occurs, some of the suns light is
    blocked by the moons shadow or by the Earths
    shadow.

http//co-ops.nos.noaa.gov/astronomical.shtml
40
Rotation of the Moon
  • The moon rotates on its axis approximately every
    27.3 days
  • The moon rotates on its axis at about the same
    rate that it revolves around the Earth

http//co-ops.nos.noaa.gov/astronomical.shtml http
//hrw.com
41
The Light of the Moon
  • The Moon does not generate any light itself it
    just reflects the light of the Sun.

http//co-ops.nos.noaa.gov/astronomical.shtml
42
Moon Phases
  • The Moon does not produce its own light, but
    looks bright because its surface reflects light
    from the Sun. As the Moon orbits the Earth, the
    amount of the lighted surface that is visible
    from Earth changes. This causes the shape of the
    visible surface to change and give us the phases
    of the moon.

43
Moon Phases
  • The Moon passes through 6 phases during a cycle
  • New Moon
  • Waxing Crescent
  • First Quarter
  • Waxing Gibbous
  • Full Moon
  • Waning Gibbous
  • Last Quarter
  • Waning Crescent
  • http//www.calculatorcat.com/moon_phases/moon_phas
    es.phtml

44
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45
New Moon
  • The New Moon lies between the Earth and the Sun
    because the sunlit side of the Moon is away from
    the Earth. The New Moon is invisible to us.

http//co-ops.nos.noaa.gov/astronomical.shtml
46
Waxing Crescent
  • As the Moon moves along its orbit, it appears as
    a crescent on the right side. As the visible
    part of the moon grows, it is said to be waxing.

http//co-ops.nos.noaa.gov/astronomical.shtml
47
First Quarter
  • The Moon has now completed a quarter of its orbit
    and appears to us as a half circle.

http//co-ops.nos.noaa.gov/astronomical.shtml
48
Waxing Gibbous
  • When more than half of the sunlit side of the
    Moon is visible, the Moon is gibbous.

http//co-ops.nos.noaa.gov/astronomical.shtml
49
Full Moon
  • The Moon reaches the second quarter of its orbit.
    The entire daylight side is visible and appears
    to us as a circle.

http//co-ops.nos.noaa.gov/astronomical.shtml
50
Waning Gibbous
  • As the sunlit side of the Moon turns away from
    us, the Moon begins to wane.

http//co-ops.nos.noaa.gov/astronomical.shtml
51
Last Quarter
  • The Moon reaches the third quarter of its orbit
    and appears as a backwards D.

http//co-ops.nos.noaa.gov/astronomical.shtml
52
Waning Crescent
  • The visible portion of the Moon dwindles to a
    crescent. The fraction of the Moons disk that is
    illuminated is decreasing.

http//co-ops.nos.noaa.gov/astronomical.shtml
53
The Effect of the Phases of the Moon on the Tides
  • Spring Tides occur when the sun, the Earth and
    the moon are horizontally in line. During this
    time the high tides are the highest and the low
    tides are the lowest.
  • Neap Tides occur when the sun, the Earth and the
    moon are at 90o angles. There is less of a
    difference in high tides and low tides during
    this time.

http//co-ops.nos.noaa.gov/astronomical.shtml
54
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55
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56
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57
Nova scotia horbor tide animation
58
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59
Moon Rotation
The moon wobbles as it rotates. True
60
This is showing the shadow of the moon going
across the earth. (A solar Eclipse)
Notice that half the earth is dark and half is
always light.
61
Can you locate the Marias and the highlands?
The OLD Man of the Moon.
62
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63
Questions Discussion
http//nssdc.gsfc.nasa.gov/planetary/lunar/images/
astflag.jpg
64
Questions Discussion
  • The moon rotates on its axis and revolves once
    around the Earth at the same rate which causes
  • A. day and night
  • B. the same side of the moon to always be visible
    from Earth
  • C. the tides to change
  • D. opposite sides of the moon to be visible from
    Earth

65
Questions Discussion
  • The moon rotates on its axis and revolves once
    around the Earth at the same rate which causes
  • A. day and night
  • B. the same side of the moon to always be visible
    from Earth
  • C. the tides to change
  • D. opposite sides of the moon to be visible from
    Earth

66
Questions Discussion
  • 1. Explaination
  • Because the rotation and revolution of the moon
    around the Earth happens at approximately the
    same rate only one side of the moon is ever
    visible from Earth. Follow the path in your mind
    to understand this concept

http//hrw.com
67
Questions Discussion
  • The moon and the sun appear to move across the
    sky each day because of
  • A. the Suns movement in the sky
  • B. the Earths revolution around the sun
  • C. the Earths rotation on its axis
  • D. the Moons shadow on the Earth

68
Questions Discussion
  • The moon and the sun appear to move across the
    sky each day because of
  • A. the Suns movement in the sky
  • B. the Earths revolution around the sun
  • C. the Earths rotation on its axis
  • D. the Moons shadow on the Earth

69
Questions Discussion
  • 2. Explanation
  • Because the Earth rotates on its axis causing
    day and night, the moon and sun appear to move
    across the sky. Our position on the Earth is
    what is actually changing.

http//hrw.com
70
Questions Discussion
  • How often do Spring tides and Neap tides each
    occur?
  • A. two times a month
  • B. two times a day
  • C. two times a year
  • D. four times a year

http//co-ops.nos.noaa.gov/astronomical.shtml
71
Questions Discussion
  • How often do Spring tides and Neap tides each
    occur?
  • A. two times a month
  • B. two times a day
  • C. two times a year
  • D. four times a year

http//co-ops.nos.noaa.gov/astronomical.shtml
72
Questions Discussion
  • 3. Explanation
  • Because the moon takes approximately a month to
    revolve around the Earth and is in line
    horizontally two times and at a 90o angle two
    times during this period each of the types of
    tides (Spring and Neap) occur two times a month.

http//co-ops.nos.noaa.gov/astronomical.shtml
73
Questions Discussion
  • What is the best way to arrange the following
    words into the concept map below (phases,
    eclipse, solar eclipse, revolution, and lunar
    eclipse)
  • A. phases, revolution, eclipse, solar eclipse,
  • lunar eclipse
  • B. eclipse, solar eclipse, lunar eclipse, phases,
  • revolution
  • C. lunar eclipse, revolution, eclipse, solar
    eclipse,
  • phases
  • D. revolution, phases, eclipse, solar eclipse,
  • lunar eclipse

1
2
3
4
5
74
Questions Discussion
  • What is the best way to arrange the following
    words into the concept map below (phases,
    eclipse, solar eclipse, revolution, and lunar
    eclipse)
  • A. phases, revolution, eclipse, solar eclipse,
  • lunar eclipse
  • B. eclipse, solar eclipse, lunar eclipse, phases,
  • revolution
  • C. lunar eclipse, revolution, eclipse, solar
    eclipse,
  • phases
  • D. revolution, phases, eclipse, solar eclipse,
  • lunar eclipse

1
2
3
4
5
75
Questions Discussion
Revolution
  • 4. Explanation

of the moon around the Earth results in
phases
of the moon which may result in an
eclipse
such as a
solar eclipse
lunar eclipse
76
Questions Discussion
5. At which position on the diagram above does
the waning gibbous phase of the moon occur?




A. 1 B. 2 C. 3 D. 4
http//hrw.com
77
Questions Discussion
5. At which position on the diagram above does
the waning gibbous phase of the moon occur?




A. 1 B. 2 C. 3 D. 4
http//hrw.com
78
Questions Discussion
5. Explanation After the full moon which is
between stages 2 and 3, the moon begins the
waning stage and it first passes through a
gibbous before the half and crescent stages,
therefore number 3 C is the correct answer




http//hrw.com
79
Questions Discussion
  • 6. Susan is sketching the appearance of the moon
    each night. Below is her entry for last night.
  • What will Susans entry look like in 14 days?
  • A. Image A
  • B. Image B
  • C. Image C
  • D. Image D

http//hrw.com
80
Questions Discussion
  • 6. Susan is sketching the appearance of the moon
    each night. Below is her entry for last night.
  • What will Susans entry look like in 14 days?
  • A. Image A
  • B. Image B
  • C. Image C
  • D. Image D

http//hrw.com
81
Questions Discussion
  • 6. Explanation
  • Answer choice D is correct because in 14 days
    the moon will have gone through ½ of its cycle
    and will basically be in the opposite phase as it
    is when Susan illustrates the moon phase.

http//hrw.com
82
Questions Discussion
  • 7. Mrs. Gupta is the Cub Scout den mother. She is
    taking a troop of boys on a camp out and believes
    it will be easier if she schedules the outing to
    happen during the full moon. Last night she
    observed a waning gibbous moon. Approximately how
    many days will she have to wait before the next
    full moon?
  • A. 7
  • B. 14
  • C. 21
  • D. 28

http//hrw.com
83
Questions Discussion
  • 7. Mrs. Gupta is the Cub Scout den mother. She is
    taking a troop of boys on a camp out and believes
    it will be easier if she schedules the outing to
    happen during the full moon. Last night she
    observed a waning gibbous moon. Approximately how
    many days will she have to wait before the next
    full moon?
  • A. 7
  • B. 14
  • C. 21
  • D. 28

http//hrw.com
84
Questions Discussion
  • 7. Explanation
  • If you divide the phases up there is
    approximately 7 days between every other phase or
    3.5 days between each phase which would give you
    21 days until the next full moon from a waning
    gibbous. The waning gibbous is the phase just
    after the full moon therefore you have to go all
    the way around to get back to a full moon.

http//hrw.com
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