The natural world includes:

• plants, animals, and non-living things found in nature

• only animals

• only plants

• only things made by humans

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The goal of science is:

• to understand and explain the natural world

• to create myths and legends

• to promote personal beliefs

• to ignore evidence and facts

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Scientists examine the workings of the natural world by:

• conducting experiments and making observations

• relying solely on opinions

• ignoring evidence and data

• using only guesswork

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Two methods scientists use to test predictions are:

• experiments and observations

• guesswork and assumptions

• predictions and opinions

• theories and beliefs

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The difference between an independent variable and a dependent variable is:

• An independent variable is manipulated to observe its effect on the dependent variable, which is measured.

• A dependent variable is manipulated to observe its effect on the independent variable, which is measured.

• Both variables are manipulated equally in an experiment.

• There is no difference between an independent and a dependent variable.

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Controlling all variables except one is important when studying experiments because:

• it ensures that only the effect of the variable being tested is measured.

• it makes the experiment more complicated.

• it allows for more random results.

• it increases the number of variables to analyze.

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What is controlled in a controlled study?

• All variables except the one being studied.

• Only the results of the experiment.

• The opinions of the researchers.

• The time of day the study is conducted.

Do scientific facts ever change?

• yes, when there is new evidence
• no, they never change
• it depends on the scientist
• only on holidays

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Peer review benefits the scientific community by:

• ensuring the quality and credibility of research

• guaranteeing all research is error-free

• eliminating the need for further studies

• allowing only famous scientists to publish

The replication of results is important because:

• it helps verify the reliability and accuracy of findings.

• it always produces new theories.

• it eliminates the need for further research.

• it guarantees that all experiments will succeed.