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Questions and Answers
Earth is the ___
Earth is the ___
third planet from the sun
How many planets are there in our galaxy?
How many planets are there in our galaxy?
8-9 planets
What is the name of our galaxy?
What is the name of our galaxy?
Milky Way
Our sun is the only ____ in our solar system.
Our sun is the only ____ in our solar system.
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Name the nine planets in our solar system.
Name the nine planets in our solar system.
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1 astronomical unit is ___
1 astronomical unit is ___
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Light travels at ___
Light travels at ___
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Light year is the ______.
Light year is the ______.
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Earth's axis is tilted ____ degrees.
Earth's axis is tilted ____ degrees.
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Earth rotates once every _____
Earth rotates once every _____
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Rotation causes ___
Rotation causes ___
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The direction Earth rotates is ____
The direction Earth rotates is ____
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Earth revolves around ____
Earth revolves around ____
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Study Notes
Planetary Facts
- Earth is the third planet from the Sun in our solar system.
- There are 8 to 9 planets located within our galaxy, the Milky Way.
- The solar system's only star is our Sun.
List of Planets
- The nine recognized planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.
Astronomical Measurements
- One astronomical unit (AU) is the average distance from Earth to the Sun, approximately 150 million kilometers.
- Light travels at a speed of 300,000 kilometers per second.
- A light year measures the distance light travels in one year.
Earth's Rotation and Revolution
- Earth's axis is tilted at an angle of 23.5 degrees.
- The planet rotates once every 24 hours, resulting in day and night as well as temperature variations.
- Earth's rotation occurs in a counterclockwise direction.
- The planet revolves around the Sun, which contributes to the changing seasons.
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