Science Vocabulary List
Terms
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- 10.) mantle
- the layer of Earth below the crust
- 13.) chemical reaction
- if you mix vinegar and baking soda, then you will cause a ________
- 15.) circuit
- a complete path from which electricity flows
- 17.) H20
- Chemical symbol for water
- 1.) cell
- the basic living unit of all organisms
- 7.) fossil fuels
- coal, oil, and natural gases are examples of __________
- 2.) DNA
- deoxyribonucleic acid: molecule that carries genetic instructions
- 5.) photosynthesis
- the process by which green plants use carbon dioxide, water, and energy from sunlight in order to make food
- 12.) matter
- solids, liquids, and gases are states of ____________
- 14.) mass
- the amount of matter an object contains
- 9.) crust
- the top, rocky layer of Earth
- 6.) species
- group of organisms that resemble one another and produces offspring when they interbreed
- 8.) nonrenewable resources
- oil and minerals are examples of __________, because once they are gone, they can't be replaced
- 11.) atmosphere
- the layer of gaes around the Earth
- 18.) NA
- chemical symbol for Sodium
- 19.) 365 days
- It takes the Earth _____ to revolve around the Sun
- 20.) 24 hours
- It takes the Earth ____ to spin on its
- 4.) immune system
- the body system that attacks disease-causing agents
- 3.) evolution
- the genetic makeup of a population changes over a period of time
- 16.) acceleration
- any change in an object's speed or direction in motion