Unit Test — Unit test Answers
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Which is a scientific claim?
A
At least 75 percent of the class will pass the physical science test today because they studied more than two hours for it.B
According to the star of the number-one teen TV show, crushed rosemary and olive oil spread over pimples will draw out the bacteria and prevent scarring.C
Plants fertilized once per week with Super Plant Food Formula have been shown in testing to produce twice as much fruit as plants that are not.D
Placing half-filled one-gallon jugs of water out on the lawn prevents moles from occupying the space underground.22
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The table shows results of an experiment that was replicated.
A
They are neither precise nor reproducible.B
They are precise but not reproducible.C
They are accurate and reproducible.D
They are accurate but not reproducible.23
Nami conducts an investigation on plants. She places a grow light on a timer to give the plants different amounts of light to see if this would affect their growth. Which term describes the amount of light in this investigation?
A
hypothesisB
controlC
dependent variableD
independent variable24
The Port of Houston is one of the busiest ports in the country. The U.S. Department of Energy gave this port $3.4 million to operate twenty heavy-duty hydrogen hybrid fuel cell powered trucks around the port.Which is the most likely reason the U.S. government made such an investment?
A
to produce more waterB
to improve fueling stationsC
to move more cargoD
to reduce harmful emissions25
Which statement best describes comparative and descriptive investigations?
A
They both include a question, procedure and conclusion.B
They both include a hypothesis.C
They both require a specified control group.D
They both use independent and dependent variables.Did you find these answers helpful?
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