8th Grade Science Midterm Reviewer

Front

What is positive reinforcement?

Back

Positive reinforcement is a behavioral strategy that involves rewarding desired behaviors to encourage their recurrence.

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What conclusion can be drawn from an experiment that shows improved behavior with positive reinforcement?

Back

The results support the researcher's prediction; the behavior of the students in this experiment improved when positive reinforcement was used.

Front

Which element has similar chemical properties to phosphorus (atomic #15)?

Back

Nitrogen, because nitrogen is located right above phosphorus in the periodic table.

Front

What happens when a sample of gold is reduced to its smallest particle?

Back

The sample would be reduced to atoms of gold.

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How does a hypothesis contribute to scientific investigation?

Back

A hypothesis leads to further investigations, even if it is not supported by data.

Front

What does the historical development of the heliocentric model demonstrate about scientific reasoning?

Back

Science is based on evidence and is open to change.

Front

What is a hypothesis?

Back

A hypothesis is a testable prediction about the relationship between variables.

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What is the scientific method?

Back

The scientific method is a systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

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What is the difference between a scientific theory and a scientific law?

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A scientific theory explains why phenomena occur, while a scientific law describes what happens under certain conditions.

Front

What is the role of data in scientific research?

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Data is used to support or refute a hypothesis and to draw conclusions from experiments.