BELL RINGER - ECO.1.A - 1.D

Elisa wanted to investigate the effectiveness of different suntan lotions on protecting skins from sunburn.

Which would most likely be a testable hypothesis that would apply to her investigation?

• The time of day determines how well the lotion will work.

• The color of the lotion determines how much fragrance it will have.

• The cost of the lotion determines how well the skin will be protected.

• The ingredients in the lotion determine how often an allergic reaction will occur.

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Who would the control group most likely be?

• Athletes who stretch before working out

• Non-athletes who stretch before working out

• Athletes who do not stretch before working out.

• Non-athletes who do not stretch before working out.

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What is the dependent variable in Marissa's investigation?

• The type of soil

• The growth of the radish plant

• The music played

• The amount of water added

What procedure should the student follow first?

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• Attempt to collect the specimen from the slide pieces

• Use a broom to sweep up all glass on the floor

• Pick up the larger pieces of the slide

• Inform the teacher of the accident

Which information will this experiment most LIKELY provide?

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• The effect of light intensity on plant growth

• The effect of lower temperatures on plant growth

• The effect of different types of light on plant growth

• The effect of different colors of light on plant growth

What would be the BEST way to visually represent these data?

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• Bar graph

• Line Graph

• Pie Chart

• Scatterplot

Which conditions allowed the hypothesis about the speed of light become a scientific theory?

• The hypothesis was supported by a famous physicist.

• The hypothesis predicted a wide range of consequences.

• The hypothesis predicted the speed of light in a vacuum.

• The hypothesis was supported by many different experiments.

Which statement BEST explains why evolution is classified as a theory?

• It is a set of hypotheses supported by scientific findings.

• It has been proved by valid scientific experiments.

• It explains observations more simply than other available models.

• It is accepted by a majority of scientists working in relevant fields.

Jennifer designs a computer model to show how endangered species might benefit from a new habitat protection plan. What is one limitation of her model?

• Computer models cannot include every possible variable in a real ecosystem.

• Computer models cannot accommodate changes in birth and death rates.

• Computer models assume that changes happen over a short period of time.

• Computer models simulating real ecosystems can only account for biotic changes.

Computers have been used to produce detailed three-dimensional models of protein. Which BEST describes the value of this models in protein research?

• They behave more consistently than real proteins.

• They reduce the need to validate experimental results.

• They predict properties of proteins used to guide experimental design.

• They provide theories for the application of the scientific method to protein research.