Question 1

Which step does the scientific method always begin with?

Accepted Answer

Observation

Question 2

A student wants to test if fertilizer affects plant growth. What is the independent variable in this experiment?

Accepted Answer

Application of fertilizer

Question 3

Which of the following is a correct example of a hypothesis statement?

Accepted Answer

If I water plants daily, then they will grow taller because water is essential for growth.

Question 4

What type of data is collected using rulers, balances, and thermometers?

Accepted Answer

Quantitative data

Question 5

Which graph type is best for showing how a variable changes over time?

Accepted Answer

Line graph

Question 6

A pie chart is most useful for displaying:

Accepted Answer

Numerical proportions or percentages

Question 7

In a scientific experiment, what is the dependent variable?

Accepted Answer

The variable you measure

Question 8

Which of the following best describes qualitative data?

Accepted Answer

Data observed using senses such as sight, smell, and touch

Question 9

A bar graph is most appropriate for:

Accepted Answer

Comparing categories of data

Question 10

If the largest value on a graph's axis is 370 and you have 10 intervals, what is the scale for each interval?

Accepted Answer

$$370 \div 10 = 40$$

Question 11

Why do scientists use graphs to communicate data?

Accepted Answer

Graphs help summarize and compare information visually

Question 12

Which sense is NOT typically used to make scientific observations?

Accepted Answer

Imagination

Question 13

In the cookie bake-off experiment, what is the dependent variable?

Accepted Answer

Number of votes each cookie receives

Question 14

Which of the following is NOT a step in the scientific method?

Accepted Answer

Guessing

Question 15

What is the purpose of using replicates in a data table?

Accepted Answer

To increase reliability and accuracy of results

Question 16

Which axis is typically used for the dependent variable in a line graph?

Accepted Answer

Y-axis

Question 17

A scientist collects data on plant height every week for two months. Which graph should they use to display this data?

Accepted Answer

Line graph

Question 18

Which of the following statements about hypotheses is correct?

Accepted Answer

A hypothesis must be testable by experiment.

Question 19

What is the main difference between quantitative and qualitative data?

Accepted Answer

Quantitative data is numerical, qualitative data is descriptive.

Question 20

When setting up a science graph, what is the first step?

Accepted Answer

Find the lowest and highest values to be plotted

Scientific Method, Data Collection, and Graphing in Biology

Study Guide - Practice Questions