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Excellent little song about the incredible vastness of the universe and how fast all the objects are moving. Puts things in perspective!
The attack on the Moon is not a declaration of war or act of wanton vandalism. Space scientists want to see if any water ice or vapour is revealed in the cloud of debris.
Though the Moon mostly a dry airless desert, they believe ice could be trapped in crater shadows near the south pole which never receive any sunlight. If so it could provide vital supplies for a manned moonbase.
The following animation illustrates what most people probably understand about how the Sun, the Moon, and the Earth move. The Sun is at the center. The Earth orbits around the Sun, and the Moon orbits around the Earth. The Earth also rotates about an axis as it spins, which you can also see, because the green city appears to rotate
Awesome simulation of space missions in real time. You can listen to actual "live"updates, watch the countdown clock, explore multi-media resources such as photos and video clips.
1. What country launched the world's first man-made satellite, Sputnik, into Earth orbit on October 4, 1957?
2. Because Sputnik travels at 18,000 mph, it can make an orbit of Earth every ___ minutes.
3. Satellites passing overhead are visible in a clear dark sky one hour after ________ and one hour before ________.
4. Sputnik travels at a height of ______ miles above the Earth.
5. Describe what Sputnik looked like passing through the sky:
6. What did Homer use as the fuel for his first rocket?
7. What happened to the Vanguard rocket launched by Dr. Werhner Von Braun?
8. Rocketry was invented by the ____________, as early as 1000 AD.
9. Homer learns about potassium chlorate and sulfur to use as ________ for his rockets.
10. Draw the rocket and match/lable the parts:
Nose cone
Body tube/combustion chamber
Nozzle
11. The purpose of the nozzle in a rocket is to direct the flow of _____________.
12. Miss Riley says, "Science requires __________."
13. What do the boys build at Cape Coalwood to use for launching rockets?
14. When potassium chlorate and sugar are combined with heat, oxygen and expanding gases are produced, making an effective rocket ____________.
15. What lab safety equipment do the students use in the classroom?
16. When the rockets exploded, heat from the exhaust was melting the ___________.
17. When rocket fuel combusts, the nozzle directs a hot river of gas that reaches the speed of ____________.
18. If the mass of the propellant compared to the mass of the rocket is too little, increase the ____________ of the rocket.
19. The properties of alcohol are that it is stable and dilutes ____________.
20. What measurement do the rocket boys make during the rocket flights to calculate the height of the rocket?
21. Who told Homer at the national science fair "Congratulations and good luck"?
22. What happened to Miss Riley during the science fair?
23. What career did Homer end up having?
Spacewalk simulation e to the Educational Spacewalk Simulations Web site. The shuttle mission to service the Hubble Space Telescope will require the STS-125 astronaut crew to perform multiple spacewalks, also known as extravehicular activities, or EVAs. The repairs will extend the life of the telescope until 2020.
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How is the universe organized? How are the parts of the solar system interconnected? What is beyond our solar system? How has our understanding of space grown over time? What patterns can we observe in the sky? How has technology led to new discoveries?
Updated on 2009-11-04
Created on 2007-12-02
Category: Science
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