All flashcards
Flashcard 1: What is the main goal of improving a communication device after testing it?
Answer: To make the device work better based on test results. Testing reveals what needs fixing to enhance performance.
Flashcard 2: What do you call a part of the device that worked well during a test?
Answer: A success. Success means the part functioned as intended.
Flashcard 3: What do you call a part of the device that did not work well during a test?
Answer: A problem. Problems are parts that failed to meet expectations.
Flashcard 4: Which step comes right after you test a communication device: plan, build, test, or improve?
Answer: Improve. The engineering cycle follows: plan, build, test, then improve.
Flashcard 5: What is one correct way to record what worked and what did not during a device test?
Answer: Write notes in a results chart. Charts organize test data for easy analysis.
Flashcard 6: Which action best uses test results: guessing changes or using observations to choose changes?
Answer: Using observations to choose changes. Data-driven changes are more effective than random guesses.
Flashcard 7: What does it mean to improve a device fairly by changing only one thing at a time?
Answer: Change one variable at a time. Testing one change isolates its effect on performance.
Flashcard 8: What should you do first when a device does not work as planned during a test?
Answer: Identify what part caused the problem. Finding the cause helps target the right solution.
Flashcard 9: Which choice is the best reason to keep parts that worked well: to save time or to avoid improvement?
Answer: To save time by keeping what already works. Efficiency means preserving successful components.
Flashcard 10: Which statement correctly compares tests: “same test each time” or “different test each time” for fairness?
Answer: Same test each time. Consistent testing ensures fair comparison of results.
Flashcard 11: What should you do with your device design after you improve it and it works better?
Answer: Update the design plan to match the new version. Documentation keeps your plan current with improvements.
Flashcard 12: What should stay the same in a fair test when you improve a device?
Answer: Everything except the one part you are changing. Controlling variables ensures changes are due to the tested factor.
Flashcard 13: Which option best describes a fair test: change one thing or change many things?
Answer: Change one thing. Fair tests control variables by changing only one factor.
Flashcard 14: Which tool helps you remember test results: a results chart or a random guess?
Answer: A results chart. Charts document data systematically for accurate reference.
Flashcard 15: Identify the best reason to change only one part at a time when improving a device.
Answer: You can tell which change caused the improvement. Isolating variables reveals which specific change created results.
Flashcard 16: Which change is best when improving a device: change one part or many parts at once?
Answer: Change one part. Single changes isolate variables for clear cause-effect analysis.
Flashcard 17: What is one correct way to fix what did not work: change it or ignore it?
Answer: Change it. Modifying failed components addresses identified problems.
Flashcard 18: What is the meaning of what worked when testing a device?
Answer: Parts of the device that did the job as planned. These components successfully fulfilled their intended function.
Flashcard 19: What is the meaning of improve a device in a science design project?
Answer: Make changes so the device works better than before. Improving means making modifications to enhance performance.
Flashcard 20: Which option best describes using evidence to improve a device: use results or use opinions?
Answer: Use results. Evidence-based decisions rely on test data, not personal views.
Flashcard 21: Which option best describes a good improvement plan: change everything, or change one thing and retest?
Answer: Change one thing and retest. Small changes help identify what improves performance.
Flashcard 22: What is the correct way to compare two designs fairly during testing?
Answer: Test them the same way each time. Consistent testing conditions ensure valid comparisons.
Flashcard 23: What should you record during a test to help you improve the device later?
Answer: What worked and what did not work. Recording results guides future improvements.
Flashcard 24: Which option is the best reason to improve a device: to make it worse, or to solve a problem?
Answer: To solve a problem. Improvements fix problems found during testing.
Flashcard 25: Which word means something that did not work well in your device test?
Answer: Problem. Problems show what needs fixing in the next version.
Flashcard 26: What should you do first before changing your device design?
Answer: Look at what worked and what did not work. Analyzing results helps identify specific areas to improve.
Flashcard 27: Which option is the best way to decide what to improve: guess, or use test notes?
Answer: Use test notes. Test notes provide evidence for informed decisions.
Flashcard 28: What is one fair way to test improvements: change many parts, or change one part?
Answer: Change one part. Changing one variable at a time shows what causes improvement.
Flashcard 29: What should you do if your device already works well during the test?
Answer: Keep the parts that worked. Don't fix what isn't broken.
Flashcard 30: What is the correct name for the step where you change a device after a test?
Answer: Redesign. Redesign means changing the design based on test results.