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Quiz 1.2
Quiz 1.2 on Friday August 23th, 2019
Question | Answer |
---|---|
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 |