"Questions Kids Ask About Science (Questions Kids Ask, 18)"
How does a periscope work? Do computers understand English? How do we hear sounds? What is gravity? Why do boats float? How does a parachute work? What is a molecule? Why does water in a lake look blue? What causes electric shocks?
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| Format: | Book |
| Language: | Undetermined |
| Published: |
Grolier Limited
1989
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| Summary: | How does a periscope work? Do computers understand English? How do we hear sounds? What is gravity? Why do boats float? How does a parachute work? What is a molecule? Why does water in a lake look blue? What causes electric shocks? |
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| ISBN: | 9780717225576 |