APES Experimental Design Review

Multiple Choice

What step does every scientific experiment begin with?

• hypothesis
• question/problem
• procedure or test

• conclusion

Multiple Choice

You have decided to do an experiment to learn if a certain type of cactus will grow better in a dark closet or a sunny window. To begin your experiment, you place one cactus in a dark closet and one cactus in a sunny window. Over the next month, you record data about the cacti and their appearance every day. At the end of the month, you determine that the cactus in the sun is alive but didn’t grow and that the cactus from the dark closet is alive and grew one centimeter. Can you conclude that a dark closet is better for this type of cacti’s growth?

• No, you need to repeat an experiment multiple times before accepting a conclusion.

• Yes, one cactus can accurately reflect the behavior of all similar cacti.

• Yes, when you are a student your results will be accepted on small-scale studies.

• No, you need to use one cactus in both conditions.

Multiple Choice

Which of the following best describes the role of a control group in an experiment?

• It is exposed to the independent variable to observe the effect.

• It is kept the same across all groups to ensure fairness.

• It is not exposed to the independent variable and serves as a baseline for comparison.

• It is the variable that is measured as the result of the experiment.

Multiple Choice

What is a factor that is measured for change in an experiment?

• control
• constant
• independent variable
• dependent variable

Multiple Choice

What is the factor that an experimenter changes on purpose?

• Dependent Variable
• Independent Variable
• Constant
• Control

Multiple Choice

What are all the things that are kept the same in an experiment?

• controls
• data
• constants
• independent variables

Multiple Choice

What is the affect of salt water on the the height of blades of grass?

What is the independent variable in the above question?

• salt water

• height

• average

• affect

Multiple Select

Which of the following are common flaws in experiments? (Select ALL that apply.)

• Too small a sample size

• Too many independent variables

• No dependent variable

• Extraneous variables

Fill in the Blank

The dependent variable is usually plotted on the ___-axis when graphing data.

Multiple Choice

In this graph, what is the dependent variable? 

• Walla Walla Island
• Time
• Number of Deer

Multiple Choice

In which month was my weight the highest?

• July
• September
• November
• December

Multiple Choice

How many push-ups were done on Monday?

• 5
• 10
• 15
• 20

Multiple Choice

Which type of graph is best for displaying percentages of a whole?

• Line graph

• Bar graph

• Scatterplot

• Pie chart

Multiple Choice

What is the difference between a line graph and a bar graph?

• A line graph displays data in a continuous manner, while a bar graph displays data in discrete categories.

• A line graph is more suitable for showing trends over time, while a bar graph is more suitable for comparing data at a specific point in time.

• A line graph is used to show the relationship between two variables, while a bar graph is used to compare multiple variables.

• A line graph shows the trend over time, while a bar graph compares different categories.

Multiple Choice

Students collected trash on a beach over a one-year period and organized the data in the table below.

Which graph is best to display the data shown in the table?

Multiple Choice

When should a pie chart be used?

• When comparing parts of a whole

• When showing change over time

• When comparing data between different groups of categories

• Whenever you want

Multiple Choice

What is the dependent variable?

• nicest fruit

• number of people

• types of fruit

Multiple Choice

How can you create a 'fair test'?

• By changing one factor and keeping all the other conditions constant

• By changing some variables but keeping one constant

• But repeating the experiment more than 10 times

• By allowing each scientist to record the results separately

Multiple Choice

In our investigation, The effect if salt concentration on mung bean germination. Which of the following would be considered the dependent variable?

• The mung bean seeds

• The length of the root

• the salt concentrations

• All seeds growing for 3 days

Multiple Select

In our investigation, The effect if salt concentration on mung bean germination. Which of the following would be considered a controlled variable? (select two)

• Using the same type of mung bean seed

• The length of the root

• the salt concentrations

• All seeds growing for 3 days