Unit 1 Review- Scientific Inquiry

This variable in an experiment is the one being deliberately changed by the scientist. 

• dependent variable
• independent variable
• data
• control group

The analysis of data gathered during a particular experiment is necessary in order to

• (1) formulate a hypothesis for that experiment 
• (2) develop a research plan for the experiment 
• (3) design a control for the experiment 
• (4) draw a valid conclusion for that experiment

A student conducted an original, well-designed experiment, carefully following proper scientific procedure. In order for the conclusions to become generally accepted, the experiment must

• (1) contain several experimental variables
• (2) be repeated to verify the reliability of the data
• (3) support the original hypothesis
• (4) be conducted by a scientist

What variable in an experiment is measured? - it is also called the responding variable.
For example: measuring the amount of mold on bread 

• Dependent variable
• Operational Definition
• Independent Variable
• Control Variable

What can be defined as:
a possible explanation for a set of observations, or an educated guess that must be "testable."

• Scientific Theory
• Communicating
• Hypothesis
• Claim

What are facts, figures, and other evidence gathered through observations?

• Hypothesis
• Varibale
• Reasoning
• Data

In an experiment to test the effect of exercise on the

number of times a clothespin can be squeezed in 1

minutes, the dependent variable would be the

• test subject

• number of squeezes

• clothespin

• amount of exercise

How does the CONTROL GROUP setup in an

experiment differ from the other setups in the same

experiment?

• It has more variables.

• It utilizes a different method of data collection.

• It does not receive the experimental treatment (Independent Variable)

• It tests a different hypothesis.

Which statement describes the best procedure to

determine if a vaccine for a disease in a certain bird

species is effective?

• Vaccinate 100 birds and expose all 100 to the

  disease.

• Vaccinate 50 birds, do not vaccinate 50 other

  birds, and expose all 100 to the disease.

• Vaccinate 50 birds, do not vaccinate 50 other

  birds, and expose only the vaccinated birds to the

  disease.

• Vaccinate 100 birds and expose only 50 of them to

  the disease.

As part of an investigation, 10 bean seedlings in one

setup were grown in the dark, while 10 seedlings in

another setup were grown in sunlight. All other growth

conditions were kept the same in both setups. The

seedlings grown in the dark were white with long,

slender stems. These seedlings eventually died. The

seedlings grown in the sunlight were green and healthy.

Which hypothesis was most likely being tested in this

investigation?

• Light is necessary for the germination of bean

  seeds.

• Light is necessary for proper mineral absorption

  by plants.

• Plants grown in the dark cannot perform the

  process or respiration.

• Sunlight is necessary for the normal growth of

  bean plants.