MAP Applied Methods and Techniques 2 — Questions and Answers
Question 1: A student tests whether fertilizer amount affects plant height. Which variable is the dependent variable?
- Amount of fertilizer
- Plant height (Correct answer)
- Type of soil
- Amount of sunlight
Correct answer: Plant height
The dependent variable is the outcome measured in response to changes in the independent variable.
Question 2: Why should an experiment include a control group?
- To increase the number of variables tested
- To provide a baseline for comparing results (Correct answer)
- To guarantee the hypothesis is correct
- To reduce the time needed for the experiment
Correct answer: To provide a baseline for comparing results
A control group receives no treatment, so results from the experimental group can be compared against it.
Question 3: A student measures the same object's mass three times and gets 24.1 g, 24.0 g, and 24.2 g. The accepted mass is 30.0 g. The measurements are best described as:
- Accurate and precise
- Accurate but not precise
- Precise but not accurate (Correct answer)
- Neither accurate nor precise
Correct answer: Precise but not accurate
The values are close to each other (precise) but far from the true value (not accurate).
Question 4: Which type of graph is best for showing how temperature changes over a 24-hour period?
- Pie chart
- Line graph (Correct answer)
- Bar graph
- Venn diagram
Correct answer: Line graph
Line graphs show continuous change over time.
Question 5: A recipe needs 3/4 cup of sugar for 12 cookies. Using a proportion, how much sugar is needed for 36 cookies?
- 1 1/2 cups
- 2 cups
- 2 1/4 cups (Correct answer)
- 3 cups
Correct answer: 2 1/4 cups
36 is 3 times 12, so 3 × 3/4 = 9/4 = 2 1/4 cups.
Question 6: Which tool is most appropriate for measuring the volume of a liquid in a lab?
- Triple beam balance
- Graduated cylinder (Correct answer)
- Meter stick
- Spring scale
Correct answer: Graduated cylinder
A graduated cylinder is designed to measure liquid volume accurately.
Question 7: When estimating 487 × 21 to check a calculation, which estimate is most reasonable?
- 1,000
- 5,000
- 10,000 (Correct answer)
- 100,000
Correct answer: 10,000
Rounding to 500 × 20 gives 10,000.
MAP Applied Methods and Techniques 2
A student tests whether fertilizer amount affects plant height.
Which variable is the dependent variable?