Flashcards
Sem título
Flashcards do conjunto (14)
- 1What objects are in our sky?stars, moon
- 2what is a galaxy?a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction
- 3what is the name of our galaxy?The name of our galaxy is the Milky Way
- 4What are stars made of ?Stars are made of very hot gas. This gas is mostly hydrogen and helium, which are the two lightest elements.
- 5What is our stars name ?the sun
- 6what objects make up the solar system ?Our solar system is made up of a star - the Sun - eight planets, 146 moons, a bunch of comets, asteroids and space rocks, ice and several dwarf planets, such as Pluto. The eight planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
- 7what causes night and day?Day and night is caused by the rotation of the Earth about its axis.
- 8Earth and Sun during a Lunar Eclipse
- 9Moons effect on Earths water causing tides?
- 10what causes seasons?The earth's spin axis is tilted with respect to its orbital plane.
- 11the planets of the solar systemMercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
Pluto - 12Ptolemyhe created epicycles
- 13copernicusformulated a model of the universe that placed the Sun rather than the Earth at its center.
- 14Galileo'she found the moons around Jupiter . he developed the telescope. explained gravity
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- FlashCards sobre Sem título, criado por cassidy_baker em 10-09-2014.
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