Scientific Method Quiz

What is a hypothesis?

• A hypothesis is a proven fact that does not require any testing.

• A hypothesis is a random guess with no basis in evidence.

• A hypothesis is a proposed explanation or prediction that can be tested through experimentation or observation.

What is the independent variable?

• The independent variable is the variable that is kept constant in an experiment.

• The independent variable is the variable that is manipulated or changed by the researcher in an experiment.

• The independent variable is the variable that is measured in an experiment.

What is an inference?

• A wild guess without any evidence or reasoning.

• A conclusion or deduction based on evidence and reasoning.

• A random assumption without any logical basis.

What is the dependent variable?

• The dependent variable is the variable that is being measured or observed in an experiment.

• The dependent variable is the variable that is manipulated in an experiment.

• The dependent variable is the variable that is controlled in an experiment.

What are constants in an experiment?

• Variables that are kept the same throughout the experiment and do not change.

• Variables that change during the experiment.

• Factors that are not important in the experiment.

Give an example of a hypothesis.

• An example of a hypothesis is 'If plants are given more sunlight, then they will grow taller.'

• If plants are given more sunlight, they will grow.

• If plants are given more water, they will not grow.

Give an example of an inference.

• Observing wet ground and inferring that the ground is wet.

• Observing wet ground and inferring that a sprinkler was turned on.

• Observing wet ground and inferring that it rained.

Test the effect of different amounts of fertilizer on plant growth. The independent variable is:

• The growth of the plant

• The type of soil

• The amount of light

• The amounts of fertilizer used

Which observation is quantitative?

• It is 5 cm long

• It is smooth

• It looks red

• It is dry

Dolphins have smooth skin.

• quantitative observation

• qualitative observation