Science

8th

grade

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8R Science Final Review- 1

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118 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt
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    A student set up the experiment shown below to determine if radish seeds take in oxygen   as they germinate. Methylene blue is a chemical that is blue when oxygen is present, but is     colorless when oxygen is not present. Containers A and B each contained 200 mL of water and 10 drops of methylene blue. Ten radish seeds were added to container A. Container B   had no radish seeds.
    The purpose of container B in this experiment is to
    serve as the control container       
    serve as the experimental container
    show that seeds do not give off oxygen
    show that seeds do not give off carbon dioxide
  • 2. Multiple Choice
    30 seconds
    1 pt
    Which statement is an inference (prediction)? 
    A thermometer shows that the air temperature is 56°F. 
     A mineral sample of galena produced a gray-black streak when tested.
    Based on previous data, ten hurricanes may occur in the year 2013.
    A weather vane indicates the wind is coming from the west.
  • 3. Multiple Choice
    30 seconds
    1 pt
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    What is the density of the object in the water?
    1.0 g/ml         
    .5 g/ml
    0.8 g/ml
    0.2g/ml
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