Solar Energy
Solar backpack
Solar backpacks
Solar heater
Solar cooker
Archimedes
Comprehension Check Question p
1.Robert Harrison went to L.A. by plane, two months ago.
2. Robert Harrison went to L.A with a solar backpack.
3. The solar backpack needs the battery.
4. A solar heater was invented before Archimedes used solar energy.
5. There was not a solar cooker in the 1700s.
6. Solar devices didn’t work at night.
7. When a solar heater and cooker were invented, many people bought them.
8. What did Archimedes do with mirrors?
9. When was the solar heater was invented?
10. Why was a solar cooker not popular?