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Quiz 1.2

Quiz 1.2 on Friday August 23th, 2019

Students should always do this FIRST in a science lab - follow teacher directions
How can you separate a mixture of sand and iron filings? use a magnet
What happens when a solid heats up? it melts and becomes a liquid
Non-renewable resources include - fuel, oil, natural gas
Renewable resources include - grass, water, wind
A force is - a push or a pull
Are metals conductors or insulators? conductors
Examples of solids include - wooden block, rubber ball, ice, rocks
Examples of liquids include - water, soda, tea
Examples of gasses include - oxygen, helium, carbon dioxide
More force is needed to move ____________ objects. heavier
Less force is needed to move _____________ objects. lighter
How can you make sure you get accurate measurements in an experiment? repeat the experiment 3 times
Examples of mixtures are ______________ chex mix, trail mix, fruit salad
Examples of solutions are ______________ kool aid, lemonade, food coloring and water
What lab safety equipment is needed when working with fire? fire extinguisher
What is a variable? the thing that changes in an experiment
What is a constant? the things that stay the same, that are NOT changed in an experiment
how many things can you change in an experiment? 1
why should you always repeat the experiment? to make it more reliable
Created by: mrsnowlin