All flashcards
Flashcard 1: Which unit is most appropriate to record the mass of a small rock sample?
Answer: grams (g). Standard metric unit for small masses.
Flashcard 2: Which unit is most appropriate to record the volume of water in a graduated cylinder?
Answer: milliliters (mL). Standard metric unit for small liquid volumes.
Flashcard 3: Find Δ when the before mass is 12g and the after mass is 15g.
Answer: 3g. 15g−12g=3g using the change formula.
Flashcard 4: Which graph type is best for showing how a measurement changes over time across many days?
Answer: Line graph. Connected points show trends over time.
Flashcard 5: Find Δ when the before temperature is 22∘C and the after temperature is 18∘C.
Answer: −4∘C. 18∘C−22∘C=−4∘C shows a decrease.
Flashcard 6: Choose the correct comparison statement when before is 8mL and after is 6mL.
Answer: The volume decreased by 2mL. 6mL−8mL=−2mL means a decrease.
Flashcard 7: What should the x-axis represent on a line graph showing measurements over time?
Answer: Time (for example, day or hour). Independent variable (time) goes on horizontal axis.
Flashcard 8: What is the correct formula for change in a measurement from before to after?
Answer: Δ=after−before. Delta means change; subtract starting from ending value.
Flashcard 9: Which graph type is best for comparing a before value and an after value for one item?
Answer: Bar graph. Side-by-side bars clearly show two values.
Flashcard 10: Which option correctly orders these steps: measure, record, graph, compare before vs after?
Answer: Measure → record in a table → graph → compare before and after. Logical sequence: collect data, organize it, visualize it, analyze it.
Flashcard 11: Which option best describes a fair comparison when graphing before and after data?
Answer: Use the same units and the same scale for both before and after values. Consistent units and scales ensure accurate visual comparison.
Flashcard 12: What should the y-axis represent on a graph comparing before and after measurements?
Answer: The measured variable with units. Dependent variable (what you measure) goes on vertical axis.
Flashcard 13: Identify the missing graph part: A graph has axes and labels but no description of what it shows.
Answer: A title is missing. Title explains what the graph shows.
Flashcard 14: What is the best definition of measurement data in a before-and-after investigation?
Answer: Number results from measuring a variable before and after a change. Numbers from measurements show how something changes.
Flashcard 15: Identify the missing graph part: A graph shows bars but has no variable names or units.
Answer: Axis labels (with units) are missing. Labels tell what each axis measures.
Flashcard 16: What is the independent variable in a before-and-after measurement investigation?
Answer: The change you make on purpose. You control this to see what happens.
Flashcard 17: What is the dependent variable in a before-and-after measurement investigation?
Answer: The measurement that may change because of the independent variable. This responds to what you changed.
Flashcard 18: Which unit is most appropriate to record the length of a growing plant in class?
Answer: centimeters (cm). Small enough for classroom measurements but readable.
Flashcard 19: What is the correct way to label an axis that shows length measured in centimeters?
Answer: Length (cm). Axis labels must include both variable name and units.
Flashcard 20: What is the independent variable in a before-and-after change investigation?
Answer: The factor that is changed on purpose (the condition: before vs. after). You control whether it's before or after the change.
Flashcard 21: Which unit rule must you follow when comparing before-and-after measurements?
Answer: Use the same unit for before and after, or convert to the same unit. Consistent units allow direct mathematical comparison.
Flashcard 22: What two items must be included in a correct graph title for a before-and-after investigation?
Answer: What is measured and the conditions being compared (before and after). Title must specify both the measurement and comparison.
Flashcard 23: What should the y-axis represent in a before-and-after graph of measurements?
Answer: The dependent variable measurement with units. Shows the measured values that result from the change.
Flashcard 24: What is the dependent variable in a before-and-after change investigation?
Answer: The measurement that responds and is recorded (the outcome). This variable changes as a result of your manipulation.
Flashcard 25: What should the x-axis represent in a before-and-after graph comparing two conditions?
Answer: The conditions (Before, After) or the independent variable categories. Shows what you're comparing (the manipulated factor).
Flashcard 26: Which option correctly converts 2 m to centimeters for a before-and-after comparison?
Answer: 200 cm. Multiply by 100 since 1 m=100 cm.
Flashcard 27: Identify the correct graph choice for data: Before =8 cm, After =11 cm (one object).
Answer: Bar graph. Use bars to compare two discrete conditions.
Flashcard 28: Find and correct the graphing error: y-axis labeled "Mass" but data are in grams.
Answer: Correct y-axis label: Mass (g). Units must be included in parentheses after variable name.
Flashcard 29: What does it mean to record measurement data accurately in a before-and-after investigation?
Answer: Write each measurement with the correct unit in an organized data table. Organization and units ensure accurate comparison of measurements.
Flashcard 30: Which graph type is best for comparing separate categories (such as before vs. after mass)?
Answer: Bar graph. Displays discrete categories side-by-side for comparison.