Ohio Assessments for Educators OAE Science 3 — Questions and Answers
Question 1: Which Ohio science standard domain addresses how organisms interact with each other and with their environment?
- Physical Science
- Earth and Space Science
- Life Science – Ecosystems (Correct answer)
- Engineering and Technology
Correct answer: Life Science – Ecosystems
The Life Science domain addresses ecosystems, including the interactions among organisms and between organisms and their abiotic environment.
Question 2: What is the purpose of a control group in a scientific experiment?
- To change the independent variable
- To serve as a baseline for comparison, receiving no experimental treatment (Correct answer)
- To collect the most data points
- To confound the experimental results
Correct answer: To serve as a baseline for comparison, receiving no experimental treatment
The control group receives no experimental treatment and provides a baseline against which the experimental group's results are compared.
Question 3: Which of the following BEST describes the process of natural selection?
- Organisms choose traits that help them survive
- Traits that increase survival and reproduction become more common in a population over generations (Correct answer)
- All organisms in a species evolve at the same rate
- Mutations are always beneficial
Correct answer: Traits that increase survival and reproduction become more common in a population over generations
Natural selection is the process by which heritable traits that improve survival and reproduction increase in frequency across generations.
Question 4: A teacher shows students how a beaver dam changes water flow and affects nearby plant communities. This BEST illustrates which concept?
- Genetic inheritance
- Plate tectonics
- Ecosystem interdependence and niche construction (Correct answer)
- Atomic structure
Correct answer: Ecosystem interdependence and niche construction
The beaver dam example illustrates how one organism can alter its environment, creating cascading effects on other species—a concept called niche construction within ecosystem interdependence.
Question 5: Which safety rule is most important when using a Bunsen burner in a secondary science lab?
- Wear loose-fitting sleeves for comfort
- Keep flammable materials away from the flame (Correct answer)
- Leave the gas valve open between uses
- Avoid telling the teacher if something goes wrong
Correct answer: Keep flammable materials away from the flame
Keeping all flammable materials away from open flames is the most critical Bunsen burner safety rule to prevent fire hazards.
Question 6: Which graph type is MOST appropriate for showing how temperature changes over time during a chemical reaction?
- Pie chart
- Bar graph
- Line graph (Correct answer)
- Histogram
Correct answer: Line graph
A line graph is best for showing continuous change over time, making it ideal for tracking temperature during a reaction.
Ohio Assessments for Educators OAE Science 3
Which Ohio science standard domain addresses how organisms interact with each other and with their environment?