Astronomy

Moon Phases

• The moon also has a dark and light side or a night and day side.
• The new moon seems dark because the unlighted side of the moon is facing the earth.
• The new moon is the only time that the moon is between the earth and the sun.
• When the moon shows a little night side this is called the waxing crescent because waxing means grow.
• Waxing gibbous, gibbous means swolin and waxing again means growing to the next stage.
• the moon is shrinking again into waning gibbous which means getting smaller and smaller.
• Third quater is also known as last or final quater because it’s in the next new moon then turns into the waning cresent getting smaller everynight until the next new moon.

Tides

• The growing of the moon and the sun pulls up other water in oceans that makes tides.
• Where the water is pulled 1 buldge is under the moon while the other one is on the opposite side.
• Every 6 hours the tide changes high tide to low tide.
• It happens because when the earth turns these buldges of water move around the earth.
• The shape of the sea bottom also influnces this pattern the topographical features.
• There about semidiurical tides two tides a day two high tides two low tides and two tides all the same height.

Eclipse

• An eclipse usually takes place when a heavenly body like a moon or planet immerges into the shadow of another heavenly body. the word eclipse in astronomy terms actually means when one object passes into the shadow of another, darkening or blocking an object.
• A Lunar eclipse is when the earth blocks the sun casting a shadow on the moon. When this happens Earth blocks the sunlight that normally is reflected by the moon. Instead of light hitting the moon’s surface, Earth’s shadows falls on it. This is an eclipse of the moon known as the Lunar Eclipse but it can only occur when there is a full moon.
• a solar eclipse happens when the moon's shadow falls somewhere on the surface of the earth which is the opposite to the lunar eclipse. During a solar eclipse, the moon casts a shadow onto Earth.

AStronomical cycle

• The “Astronomical cycles” are 3 overlapping cycles which are: The Earth’s orbit(100,000 years), It’s wobble(26,000 years) and it’s tilt(46,000 years).
• It controls the timing of global warming and cooling, and glacial movement (mountains of ice that move around). These changes occur by altering the angles and distances from which solar energy reaches Earth
• The changes in Earth’s orbit are due to changes in Earth’s eccentricity, axial tilt and precession: Eccentricity refers to whether the Earth’s orbit is more or less circular-it changes between the two over a period of 100,000 years, Earth does not spin absolutely upright, but is tilted on its axis-we call this axial tilt. The degree of tilt changes over about 41,000 years, Precession means that the Earth wobbles on it's axis, over a period of about 23,000 years.
• Together, these 3 cycles affect the amount of solar radiation reaching the Earth, influencing the climate and bringing about the advance and retreat of the polar icecaps.

Day and night &

• It controls the timing of global warming and cooling, and glacial movement (mountains of ice that move around). These changes occur by altering the angles and distances from which solar energy reaches Earth

Seasons

• the earth is tilted on its axis and rotates well orbiting the sun it takes 365 days to orbit the sun.the tilt of the earth is the main reason we have seasons.the seasons are summer,winter,spring and autumn.earth has a northern and southern hemisphere (the upper and lower half of earth) while the earth travels around the sun the northern hemisphere is leaning closer to the sun which means it’s summer in the northern hemisphere if the northern hemisphere is closer that means the it’s winter in the northern hemisphere and it continuous when

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