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Dainsie · 04-05-2005, 03:18 AM

Quote:

Originally Posted by FaN#1

Mithos raised his hand "The distance from the Earth to the Sun averages about 93 million miles. It varies about 2% over the course of the year, with closest approach coming in the middle of winter and the farthest distance in midsummer."

2 points!

The Sun is much closer to Earth than any other star is. The Sun’s nearest stellar neighbor, Proxima Centauri (part of the triple star Alpha Centauri), is 4.3 light-years from our solar system, meaning light from Proxima Centauri takes 4.3 years to reach the Sun. The Sun is so much closer to Earth than all other stars are that the intense light of the Sun keeps us from seeing any other stars during the day.

Earth would not have any life on it without the Sun’s energy, which reaches Earth in the form of heat and light. This energy warms our days and illuminates our world. Green plants absorb sunlight and convert it to food, which these plants then use to live and grow. In this process, the plants give off the oxygen that animals breathe. Animals eat these plants for nourishment. All plant and animal life relies on the Sun’s presence.

Fill in the blanks.

The Milky Way Galaxy contains about ___ billion stars. All of these stars, and the gas and dust between them, are rotating about a galactic center. Stars that are farther away from the center move at _____ speeds and take longer to go around it.

04-05-2005, 03:18 AM	#74 (permalink)
Dainsie Blast-Ended Skrewt Join Date: Sep 2002 Location: Exploring Posts: 16,056	T l Guitar ♥ l l Bed Police l S Quote: Originally Posted by FaN#1 Mithos raised his hand "The distance from the Earth to the Sun averages about 93 million miles. It varies about 2% over the course of the year, with closest approach coming in the middle of winter and the farthest distance in midsummer." 2 points! The Sun is much closer to Earth than any other star is. The Sun’s nearest stellar neighbor, Proxima Centauri (part of the triple star Alpha Centauri), is 4.3 light-years from our solar system, meaning light from Proxima Centauri takes 4.3 years to reach the Sun. The Sun is so much closer to Earth than all other stars are that the intense light of the Sun keeps us from seeing any other stars during the day. Earth would not have any life on it without the Sun’s energy, which reaches Earth in the form of heat and light. This energy warms our days and illuminates our world. Green plants absorb sunlight and convert it to food, which these plants then use to live and grow. In this process, the plants give off the oxygen that animals breathe. Animals eat these plants for nourishment. All plant and animal life relies on the Sun’s presence. Fill in the blanks. The Milky Way Galaxy contains about ___ billion stars. All of these stars, and the gas and dust between them, are rotating about a galactic center. Stars that are farther away from the center move at _____ speeds and take longer to go around it.