The Time That Passes Between The Sun Appearing At Its Highest Point In The Sky in 2 Successive Days.
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How Do You Measure A Solar Day?
A Sundial
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Orbits
The Earth Orbits The Sun and The Moon Orbits The Earth
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How Long Does It Take The Moon To Return To The Same Position In The Sky?
A Little Longer Than 24 Hours
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How Long Does It Take Stars To Return To The Same Position?
A Little Less Than 24 Hours
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What Is A Sidereal Day?
It Takes 23 Hours 56 Minutes and 4.09 Seconds For The Earth To Rotate Through 360 Degrees
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How Are Sidereal Days Different From Solar Days?
Because Of The Earths Orbit Around The Sun. By The Time The Earth Has Turned Through One Complete Revolution, It Has Also Moved Relative To The Sun
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The Moon
It Orbits The Earth At An Average Distance Of 384000km.
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Does The Moon Give Off Any Light?
Np, It Reflects The Light Of The Sun. We See It Because It Reflects The Sun's Light. As The Moon Moves, It Reflects More or Less Light Toward Earth.
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Phases Of The Moon
* Drawing *
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How Long Does It Take For The Moon To Orbit The Earth?
27.3 Days. But Because The Earth Is Orbiting The Sun, It Takes The Moon A Bit Longer To Get Back To The Same Position Relative To The Sun
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Lunar Month
There Are 29.5 Days Between 2 Full Moons
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Name The Planets In Order
*MY VERY EAGER MOTHER JUST SPEEDED UP NAMING*
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What Is The Retrograde Motion?
Copernicus Realised That The Motion Of The Planets Would Be Easier and Quicker To Explain If The Sun Were At The Centre And All The Planets Revolved Around It. The Planets Closer To The Sun Move Faster In Their Orbits Than The Outer Planets Do.
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Retrograde Motion
So Earth Catches Up With Mars and The Goes Past It, This Makes It Loose As Of Mars Is Moving Backwards.
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Visible Planets
Mercury, Venus, Mars, Saturn and Jupiter
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How Can The Position Of An Astronomical Object Be Plotted?
With 2 Angles, Relative To A Point On Earth
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What Is An Angle Of Declination?
Whether The Object Is Above or Below The Line Of The Equator
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What Is A Positive Angle Of Declination?
The Object Is Clearly Seen From Position In The Northern Hemisphere
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What Is An Angle Of Right Ascension?
Refers To The Measurement Of The Angle East From The Vernal Equinox Point (Measured In Degrees and Minutes)
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What Is The Vernal Equinox?
The Day In Spring When The Duration Of The Day Is The Same As The Duration Of The Night
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What Is A Solar Eclipse?
When The Moon Passes Directly Between The Sun And Earth On The Same Line Casting A Shadow Of The Moon On The Surface Of Earth
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When Would A Solar Eclipse Occur?
During The New Moon Phase Of The Lunar Cycle
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What Is A Total Eclipse?
When The Moon Completely Obscures The Sun
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What Is A Partial Eclipse?
When The Moon Partially Obscures The Sun
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How Should You View A Solar Eclipse Safely?
Through A Pinhole Viewer
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What Is A Lunar Eclipse?
When The Earth Passes Directly Between The Sun And The Moon Casting A Shadow Of The Earth On The Surface Of The Moon
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When Would A Lunar Eclipse Occur?
During A Full Moon
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Solar Eclipses
Solar Eclipses Do Not Occur Every Month During The New Moon Because The Moon Does not Orbit The Earth In Exactly The Same Plane As The Earth Orbits The Sun
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What Does Ecliptic Mean?
The Path That The Sun Traces Across The SKy
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What Does Ecliptic Plane Mean?
Plane In Which The Earth Orbits The Sun
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Other cards in this set
Card 2
Front
How Do You Measure A Solar Day?
Back
A Sundial
Card 3
Front
Orbits
Back
Card 4
Front
How Long Does It Take The Moon To Return To The Same Position In The Sky?
Back
Card 5
Front
How Long Does It Take Stars To Return To The Same Position?
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