Standard 1-1.B Study Notes “The Nebular Theory”

1. According to the ________ theory the solar system formed as a cloud of spinning dust and gas condensed into the ____ and planets. nebular sun

2. Meteorites that fall to Earth support the nebular theory because the meteorites are the same ____ and ____________ as Earth. composition age

3. A rotating cloud of gas and dust from which Earth’s solar system formed is called a ______ ________. nebulasolar

4. Copernicus proposed a ___________ model of the solar system in which the planets revolve at different speeds around the sun. heliocentric

5. The heavy elements that make up Earth came from evolving/exploding ______. stars

6. Bright new stars found in the remains of exploded star systems are made from the ________ produced by the exploded stars. elements

7. Centuries ago, people thought that _____ was the center of the universe and that the sun and moon went around it because the sun and moon appear to go around Earth. Earth

8. Galileo was arrested for publishing evidence that supported the ____________ solar system theory because his ideas opposed the cultural and religious practices of his time. sun-centered

9. __________ has contributed to our understanding of the solar system by allowing new types of data to be collected more quickly. Technology

10. Telescopes have been sent to space because ground-based telescopes experience interference from Earth’s ___________. atmosphere

11. A _________ telescope uses a set of lenses to gather and focus light from distant objects. refracting

12. Telescopes have been sent into space because ground-based telescopes experience ___________ from Earth’s atmosphere. Interference

13. The sun, planets, asteroids, and comets and make up our _____ _______. solarsystem

14. Radio telescopes detect invisible electromagnetic ________. radiation

15. One benefit of the space ________ for another field of science is improved ______ pumps. program heart

16. One piece of evidence of Earth’s revolving around the sun is the varying positions of the ____________ over several weeks. constellations

17. About _____ of all matter contained in the solar _______ now exists in the sun. 99% nebula

18. Hydrogen and _______ made up Earth’s first atmosphere but have since been lost. helium

19. Mercury is so hot because it is the closest planet to the sun and it _______ slowly. rotates

20. Young Earth formed a core, mantle, and crust in a process called _____________. differentiation

21. The rotating cloud of gas and dust from which Earth, the planets and sun formed is called the _____ _______. solarnebula

22. Small bodies from which planets originated during the early formation of the solar system are called ____________. planetesimals

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