MAP Applied Methods and Techniques 5 — Questions and Answers
Question 1: Which safety practice is most important when heating a liquid in a test tube?
- Point the open end toward a classmate
- Point the open end away from people (Correct answer)
- Seal the test tube tightly
- Hold the tube with bare hands
Correct answer: Point the open end away from people
Pointing the opening away from people prevents injury if the liquid splashes.
Question 2: A model of the solar system is used in class. What is a main limitation of most physical models?
- They can never be used for learning
- They often cannot show accurate scale for both size and distance (Correct answer)
- They are always perfectly accurate
- They replace the need for observation
Correct answer: They often cannot show accurate scale for both size and distance
Models simplify reality and often distort scale to fit in a space.
Question 3: Convert 2.5 kilometers to meters.
- 25 meters
- 250 meters
- 2,500 meters (Correct answer)
- 25,000 meters
Correct answer: 2,500 meters
1 kilometer = 1,000 meters, so 2.5 × 1,000 = 2,500 meters.
Question 4: A student draws a diagram to solve a problem about the number of handshakes among 5 people. Which strategy is the student using?
- Working backward
- Making a visual representation (Correct answer)
- Writing an essay
- Using a calculator only
Correct answer: Making a visual representation
Drawing a diagram is a visual strategy that helps organize information.
Question 5: What is the difference between an observation and an inference?
- An observation uses the senses; an inference is an explanation based on observations (Correct answer)
- An observation is always wrong; an inference is always right
- They mean the same thing
- An inference uses only measuring tools
Correct answer: An observation uses the senses; an inference is an explanation based on observations
Observations are gathered with the senses, while inferences are conclusions drawn from them.
Question 6: A table shows a car traveled 60 miles in 1 hour, 120 miles in 2 hours, and 180 miles in 3 hours. How far will it travel in 5 hours at this rate?
- 240 miles
- 280 miles
- 300 miles (Correct answer)
- 360 miles
Correct answer: 300 miles
The rate is 60 miles per hour, so 60 × 5 = 300 miles.
Question 7: After collecting data, what step comes next in a scientific investigation?
- Ask a question
- Analyze the data and draw conclusions (Correct answer)
- Form a hypothesis
- Gather materials
Correct answer: Analyze the data and draw conclusions
Data is analyzed to decide whether it supports the hypothesis.
MAP Applied Methods and Techniques 5
Which safety practice is most important when heating a liquid in a test tube?