Biology Intro 2021

When leaving a movie theater, a person notices that the sidewalk is now wet. If the person assumes it rained during

the movie, the person is making...

• a hypothesis.

• an inference.

• an observation.

• a prediction.

Alexander was studying the effect of playing rock music on plant growth. One of the plants was exposed to rock music for 24 hours a day for a period of 6 weeks. Data on the growth of the plant was collected at the end of each week and plotted in a graph. Based on the data, which would be the MOST reasonable measurement at the end of an 8 week period?

• 2 dm

• 6 dm

• 8 dm

• 16 dm

When designing an experiment, scientists will test a relationship between a “cause” and an “effect.” The “effect,” also represented by what the scientist measures and records, is known as the

• dependent variable

• constant

• independent variable

• control group

The work of scientists generally begins with

• analyzing results

• drawing conclusions

• asking questions

• testing a hypothesis

The control group in an experiment is the

• point at which observations are made.

• one that does not receive any experimental treatment.

• careful measuring and recording of data.

• point at which variables are made.

Thinking that it is going to rain when you see dark clouds in the sky is a (an)

• variable

• theory

• inference

• observation

Science should be based on

• feelings

• observations

• opinions

• faith

Which of the following is an example of an observation?

• My favorite food is French fries.

• The frog has brown stripes on its back.

• The insect was lonely so it flew away.

• Biology is the best class ever.

An inference is

• the same as an observation

• a way to avoid bias

• a statement involving numbers

• a logical interpretation of an observation

A scientific Law is

• a proposed explanation for an observation

• is basically a hypothesis

• is a statement based on repeated experimental observations that describes a phenomenon in nature

• an observation about the world around us