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3.01 Technology at Work Part 2

Segment 1 - Magnetism

1. What are some of the applications of magnets?

     

2. How did magnets get their name?

     

3. What is a compass?

     

4. How does a magnet work?

     

Segment 2 - Television

5. What is the sequence for a television signal to get from a car race to the TV in your home? Plot the sequence in arrow chart form?

     

6. How and when was TV invented? How did a US inventor improve this idea?

     

7. What is the difference between the analog system and the digital video system of television? What are the advantages of the digital system?

     

Segment 3 - Many Uses of Satellites

8. What was the year and name of the very first satellite launched into space?

     

9. What type of information are Global Positioning Satellites constantly sending?

     

10. Why are scientists tracking blue whales and elephants with GPS?

     

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