Scientific Method Review

Data that are qualitative are always-

• described in words
• represented in numbers
• repeated for verification
• the most accurate type of data

What is NOT an example of qualitative data?

• the average high daily temperature for the month of july
• the names of chemicals found in breakfast cereal
• the zip codes in which each high school student resides
• types of shoes worn by pedestrians on a city street 

A hypothesis is-

• a possible explanation of an observation that can be tested
• a proven statement
• a conclusive statement
• a definite answer to a possible problem

The purpose of a controlled experiment is to allow a scientist to isolate and test-

• a single variable
• several variables
• many data
• a conclusion

How does the control group differ from an experimental group in a scientific experiment?

• the control group does not contain the experimental data, whereas the experimental group does
• the control group does not contain the experimental variable, whereas the experimental group does not
• the control group is not tested or measured
• the control group contains more than one experimental variable

The one factor that a scientist changes during an experiment.

• Controlled Variable

• Dependent Variable

• Independent Variable

The variable that is measured.

• Controlled Variable

• Dependent Variable

• Independent Variable

Tags

CCSS.HSS.ID.B.5

The factors that stay the same or are constant throughout the experiment.

• Controlled Variable

• Dependent Variable

• Independent Variable

Changes in the _________ variable causes changes in the _________ variable.

• independent; dependent
• dependent; independent

Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed two tomato plants in 10 inch pots with potting soil and watered them ¼ cup each day. One plant was placed under a cardboard box and one was placed in the sunlight. She measured the growth of the plant each week for three weeks.

What are two controlled variables? (Select 2)

• Using the same type of plant

• Each plant was placed in a 10 inch pot

• The growth of the plant

• One plant is in the sunlight and the other is under a box