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Probes, Telescopes and Satellites

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
How many Space Probes have been sent out?   Five--- Pioneer 10 and 11-- Voyageur 1 and 2-- New Horizons  
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What are sundials?   objects that measure the time according to the shadow from the sun on the dial  
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What is a refracting telescope?   a large area is focused through refracting lenses into a smaller image  
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What is a reflecting telescope?   mirrors are used to reflect the light into a small area.  
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What was the first satellite launched?   Sputnik  
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Canada was the _______ country to launch a satellite.   third  
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What is a Geostationary Orbit?   satellites that don't move.  
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What does GPS stand for?   Global Positioning Satellite  
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How many satellites are needed to determine your position on earth?   3  
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