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Sunday, April 22, 2018, 9:46 a.m.

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Super Quiz: Science Glossary

1. Layer of gas surrounding a planet 2. Study of the universe 3. Rate of change of velocity 4.The smallest part of a substance that can take part in a chemical reaction 5.A chemical substance with a pH value of less than 7 6. Also called “minor planets” and “planetoids” 7. An opening that allows light to fall onto an instrument’s optics 8. Point on a planet’s elliptical orbit at ...

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