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Science Unit 2 Ch 2

QuestionAnswer
What is the design cycle? 1. Learn 2. Plan 3. Make 4. Test... Repeat
____ is the WHY or the REASON something happens. cause
____ is WHAT happens. effect
One thing makes another thing happen is also the ______ and the result is the _____. cause effect
Engineers and scientists identify causes and effects to help explain ______________. what happens in the natural world.
When a substance is heated or cooled, it's properties ______. can change.
TRUE/FALSE: Some substances change back to the way they were before they were heated or cooled. True
If a substance doesn't change back to the way it was before it was heated or cooled, it has become ______________. a new substance.
Can fire wood change back? No
Can ice change back? Yes
Can paper change back? No
Can a candle change back? No
Something about a material that you can see, hear, smell, taste, or feel. property
Anything used in a recipe or mixture. ingredient
Two or more ingredients mixed together mixture
Information that supports an answer to a question evidence
What's the first and second properties of glue? 1. sticky (most important) 2. thick
Something that holds it's shape like a brick or stone solid
Something that takes the shape of a container like water or shampoo liquid
something that occupies space like air or helium gas
Liquid becomes a gas by ___________. evaporating
Gas becomes a liquid by ___________. condensation
Liquid becomes a solid by __________. freezing
Solid becomes a liquid by __________. melting
Created by: klonganecker
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