All flashcards
Flashcard 1: What is the meaning of the scale on a graph axis?
Answer: The value each interval represents. Scale shows how much each mark on the axis represents.
Flashcard 2: Which axis usually shows categories in a bar graph of water distribution data?
Answer: The x-axis. Categories are typically listed horizontally for easy reading.
Flashcard 3: Which axis usually shows the measured amount in a bar graph of water distribution data?
Answer: The y-axis. The vertical axis displays numerical values being measured.
Flashcard 4: What is the purpose of a graph scale when graphing water distribution data?
Answer: To show equal value steps for accurate reading. Consistent intervals allow accurate comparison of data values.
Flashcard 5: Choose the best scale if the largest water amount is 48 units and you want easy counting by 10s.
Answer: Use 0,10,20,30,40,50 on the y-axis. This scale accommodates 48 with room to spare.
Flashcard 6: What is the first step for choosing a graph type for water distribution data?
Answer: Identify whether data are parts of a whole, comparisons, or change over time. This determines which graph type fits your data best.
Flashcard 7: Which graph feature helps you read exact values for water categories on a bar graph?
Answer: Evenly spaced tick marks with a consistent scale. Equal spacing ensures accurate value reading.
Flashcard 8: Find the percent for groundwater if total freshwater is 100 units and groundwater is 30 units.
Answer: 30%. Apply the formula: 10030×100=30%.
Flashcard 9: Identify the best graph type to show both evaporation and precipitation amounts across 12 months.
Answer: Line graph. Shows how two variables change together over months.
Flashcard 10: What should the total of all slices in a pie chart of water distribution equal?
Answer: 100%. All parts of the whole must add up to the total.
Flashcard 11: Find the missing percent: Oceans 97%, Ice 2%, Other freshwater ?% in a pie chart total of 100%.
Answer: 1%. 100%−97%−2%=1% to complete the whole.
Flashcard 12: What type of graph best compares amounts of water in different categories (oceans, ice, groundwater)?
Answer: Bar graph. Displays side-by-side bars for easy comparison of quantities.
Flashcard 13: Identify the error: A bar graph compares oceans and ice, but the y-axis has no units. What is missing?
Answer: A y-axis label with units (for example, % or L). Units tell readers what the numbers measure.
Flashcard 14: Identify the correct y-axis label for a graph of water amounts measured in liters.
Answer: Water amount (L). Units (L) clarify what the numbers represent.
Flashcard 15: Which axis should show time when graphing daily rainfall amounts across a week?
Answer: The x-axis. Time is the independent variable, shown horizontally.
Flashcard 16: Identify the best graph type for: Oceans 97%, Ice 2%, Other freshwater 1%.
Answer: Pie (circle) chart. Percentages that sum to 100% work best as pie slices.
Flashcard 17: What is a legend (key) used for on a water distribution graph?
Answer: It matches colors or symbols to categories. Helps readers understand what each color or symbol represents.
Flashcard 18: What is the best graph choice when water categories are not time-based and you need side-by-side comparison?
Answer: Bar graph. Bar graphs excel at showing discrete category comparisons.
Flashcard 19: What type of graph best shows the percentage of Earth’s water in several categories as parts of a whole?
Answer: Pie (circle) chart. Shows each category as a slice of the total 100%.
Flashcard 20: What two labels should a bar graph comparing water categories always include?
Answer: Category labels and a y-axis label with units. Labels identify what's being measured and in what units.
Flashcard 21: What must every water-distribution graph include to identify what the graph is about?
Answer: A clear title. Tells readers what data the graph represents.
Flashcard 22: What type of graph best shows how a water measurement changes over time (daily rainfall totals)?
Answer: Line graph. Connects data points to show trends and patterns over time.
Flashcard 23: What is the correct formula for converting a fraction of total water to a percent?
Answer: percent=totalpart×100. Divide the part by total, then multiply by 100.
Flashcard 24: What is a key rule for choosing a scale on the y-axis for water distribution data?
Answer: Use equal intervals that fit the largest value. Equal spacing ensures visual representation matches actual data differences.
Flashcard 25: What does a graph legend (key) explain when graphing water distribution data?
Answer: What each color, symbol, or pattern represents. Legends decode visual elements so readers understand the data.
Flashcard 26: Identify the appropriate graph: You have categories and their percentages that add to 100%.
Answer: Pie chart (circle graph). Percentages that sum to 100% are ideal for pie chart representation.
Flashcard 27: Identify the appropriate graph: You want to compare freshwater amounts in lakes, rivers, and glaciers.
Answer: Bar graph. Bar graphs clearly show quantity differences between separate categories.
Flashcard 28: Identify the appropriate graph: You record daily water use for 7 days and want to show a trend.
Answer: Line graph. Line graphs connect sequential time points to visualize patterns.
Flashcard 29: What is the total percent if a pie chart has slices labeled 97% saltwater and 3% freshwater?
Answer: 100%. All pie chart slices must sum to the whole (100%).
Flashcard 30: Which scale is more appropriate for values 0 to 80: 0,10,20,... or 0,25,50,75,100?
Answer: 0,10,20,...,80. The first scale fits the data range with appropriate intervals of 10.