Intro to Biology Flashcard

Front

What best describes a hypothesis in the scientific method?

Back

A testable statement or prediction based on observations

Front

Which variable is deliberately changed by the experimenter in an experiment?

Back

Independent variable

Front

Which of the following is an example of qualitative data?

• The plant grew 5 cm in one week.
• The solution turned blue after adding the chemical.
• The temperature increased by 10°C.
• The mass of the sample is 12 grams.

Back

The solution turned blue after adding the chemical.

Front

What is the main purpose of a control group in an experiment?

Back

To provide a standard for comparison

Front

What is an inference?

Back

A conclusion drawn from evidence and reasoning

Front

Which of the following is a quantitative observation?

• The liquid is clear.
• The metal feels cold.
• The sample weighs 8 grams.
• The solution smells sweet.

Back

The sample weighs 8 grams.

Front

In an experiment testing the effect of sunlight on plant growth, what is the dependent variable?

Back

Plant growth

Front

What is an assumption in scientific research?

Back

Something accepted as true without proof for the purpose of the experiment

Front

What is the role of controlled variables in an experiment?

Back

To be kept constant to ensure a fair test

Front

What is the independent variable in the hypothesis: "If fertilizer is added to soil, then plants will grow taller"?

Back

Amount of fertilizer added