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Name: _____________
1. The _____________ is everything that exists, including all matter and energy.
2. Patterns of stars are called __________________.
3. Our ___________________ consists of eight planets and all the objects that travel
around the planets.
4. Many planets have ______________ orbiting them.
5. Planets and moons are __________________ because they do not emit their own
6. A ________ is matter that emits huge amounts of energy.
7. The closest star to Earth is the ___________. It takes _______ minutes for light from
the sun to reach Earth.
8. A __________ is matter, generally spherical, that revolves around a star.
9. The period of time for one revolution of a planet around the sun is its
10. There is a large gap between the planets Mars and Jupiter. In this gap is the
_____________ _________, consisting of small rocky objects that orbit the sun.
11. A _____________ is a lump of rock or metal that is trapped by Earth’s atmosphere.
12. A __________ is a chunk of frozen matter that travels in a very long orbit around the
sun. Much of the orbit of a comet takes place ______________ our solar system.
13. A __________ _________ is the distance that light travels in one year. This distance
is _____________________.
14. The sun produces energy through a process called ___________ ___________. Our
sun is considered a ___________ sized star.
15. It is expected that our sun will continue producing energy for another 5 ___________
16. _________ __________ are charged particles emitted by the sun that can interfere
with radio waves. They are also responsible for producing the Northern lights.
17. The _________ is the inner portion of the sun where nuclear fusion takes place.
18. ___________ coloured stars are the hottest stars. Our sun is ________ in colour.
19. A _____________ is a device that splits light into a pattern of colours. They can be
used to tell us what chemical elements make up a star.
20. _____________ magnitude refers to the brightness of a star as it appears to us.
21. The main stages in the life of a star are _____________________________________
22. A ____________ is a huge collection of gas, dust, and hundreds of billions of stars.
Our galaxy is called the _________ _________ and is ____________ shaped.
23. ___________ are huge clouds of dust and gases that are the birthplace of stars.
24. A _______________ is an enormous explosion at the end of a large star’s life. By
this stage, the star has used up all of its fuel needed to continue nuclear fusion.
25. A __________ ________ is a small, very dense object with a force of gravity so
strong that nothing can escape from it. Only ______ ________ stars form black
26. The spinning of an object around its axis is called its ______________. It takes Earth
______ hours for one rotation.
27. The earth axis of earth is tilted ________ degrees from perpendicular. This results in
varying amounts of sunlight, resulting in the four ____________ in North America.
28. It takes Earth ___________ days to make one revolution around the sun.
29. Three shapes of galaxies are _________________, __________________ and
30. ___________ _____________ are groups of stars that are fairly close and travel
31. _________ _____________ of out solar system likely formed in a manner similar to
the sun.
32. A(n) ___________ is a vehicle that travels through air.
33. A(n) ________________ is a vehicle designed to travel in the near vacuum of space,
usually 200km or more above the Earth’s surface.
34. __________ ___________ is everything outside Earth’s atmosphere.
35. ___________ is the force that causes an object to move.
36. Astronauts float in the space shuttle because they are experiencing constant ________
37. _______________ satellites take 24 hours to orbit Earth and usually orbit around the
38. A ___________ is an extra benefit from technology originally developed for another
39. Why do we see different phases of the moon?
40. What evidence do scientists have that other solar systems exist in the universe?
41. Briefly describe the Big Bang theory.
42. Briefly explain how scientists believe our solar system was formed.
43. What two pieces of evidence indicate that the universe is expanding?
44. Create a chart that compares the characteristics of the planets. Provide two points for
each planet.
Description (use p424-428)