Compare Salt Water and Freshwater - 5th Grade Science

1. What type of water has very little dissolved salt: salt water or fresh water?

   Fresh water. Rivers and lakes contain minimal dissolved minerals.

2. What approximate percent of Earth's water is salt water in most grade-level datasets?

   About $97\%$. Oceans and seas make up the vast majority of Earth's water.

3. Identify the correct fraction form for $3\%$ fresh water when comparing to total water.

   $\frac{3}{100}$. Convert percent to fraction: $3\% = \frac{3}{100}$.

4. What is the difference in percentage points between $97\%$ salt water and $3\%$ fresh water?

   $94$ percentage points. Subtract: $97\% - 3\% = 94\%$.

5. Identify the correct unit to compare amounts in a dataset labeled in percent (%).

   Percent ($\%$). Match the unit shown in the data table or graph.

6. Which ratio matches the data $97\%$ salt water and $3\%$ fresh water: $97:3$ or $3:97$?

   $97:3$. Ratio format lists salt water first, then fresh water.

7. Which is greater: $\frac{97}{100}$ of Earth's water (salt) or $\frac{3}{100}$ (fresh)?

   $\frac{97}{100}$ (salt water). $\frac{97}{100} > \frac{3}{100}$ since $97 > 3$.

8. Which option best describes water in most lakes and rivers: salt water or fresh water?

   Most lakes and rivers have fresh water. Rivers and lakes typically lack high salt content.

9. Choose the correct conclusion: A lake has $2$ g salt per L; ocean water has $35$ g per L.

   Ocean water is saltier than the lake. Ocean has $35$ g/L compared to lake's $2$ g/L of salt.

10. If a model shows $100$ drops total, how many more drops represent salt water than fresh water?

    $94$ more drops. $97$ drops minus $3$ drops equals $94$ more drops.

11. Which is greater in typical Earth water data: salt water percent or fresh water percent?

    Salt water percent is greater. Salt water at $97\%$ far exceeds fresh water at $3\%$.

12. A graph shows salt water $97$ units and fresh water $3$ units. Which is larger and by how many units?

    Salt water, by $94$ units. $97 - 3 = 94$ units difference.

13. If Earth had $100$ liters of water, how many liters would be salt water using $97\%$?

    $97$ liters. $97\%$ of $100$ liters equals $97$ liters.

14. Which unit is most appropriate for comparing parts of a whole like salt water vs fresh water: percent or meters?

    Percent. Percentages show parts of the whole water supply.

15. Which has the greater amount on Earth: $97\%$ salt water or $3\%$ fresh water?

    $97\%$ salt water is greater. $97\%$ is much larger than $3\%$.

16. Choose the correct interpretation: If fresh water is $3\%$, then in $100$ equal parts, how many are fresh?

    $3$ parts are fresh water. $3\%$ means 3 out of every 100 parts.

17. What is the name of a data display that compares amounts using rectangular bars?

    Bar graph. Bars visually compare quantities between categories.

18. What approximate percent of Earth's water is fresh water in most grade-level datasets?

    About $3\%$. Only a tiny fraction exists as rivers, lakes, ice, and groundwater.

19. Which statement is correct if a table lists salt water $97\%$ and fresh water $3\%$?

    Salt water is the majority of Earth's water. $97\%$ represents more than half, making it the majority.

20. If Earth had $200$ liters total, how many liters would be fresh water at $3\%$?

    $6$ liters. $3\%$ of $200$ liters: $0.03 \times 200 = 6$.

21. In a bar graph comparing salt water and fresh water, what does the height (or length) of a bar represent?

    The amount (value) for that category. Bar size shows the quantity being measured.

22. Identify the correct reading: On a bar graph, the taller bar represents what when comparing water amounts?

    A greater amount (or greater percent). Height corresponds to quantity in bar graph comparisons.

23. Which option correctly orders these by saltiness using data: $0$ g/L, $5$ g/L, $35$ g/L?

    $0$ g/L < $5$ g/L < $35$ g/L. Arranges from least salty to most salty concentration.

24. Identify the correct comparison symbol for $97\%$ (salt) and $3\%$ (fresh).

    $97\% > 3\%$. Greater than symbol shows $97$ is larger than $3$.

25. If Earth had $100$ liters of water, how many liters would be fresh water using $3\%$?

    $3$ liters. $3\%$ of $100$ liters equals $3$ liters.

26. Find the salt water amount if a dataset shows total water is $1000$ L and salt water is $97\%$.

    $970$ L. Multiply total volume by the percent: $1000 \times 0.97 = 970$.

27. Which option best describes ocean water: salt water or fresh water?

    Ocean water is salt water. Oceans contain dissolved salts, making them salty.

28. What is the approximate percent of Earth's water that is salt water?

    About $97\%$ is salt water. Oceans and seas make up the vast majority of Earth's water.

29. If Earth had $200$ liters total, how many liters would be salt water at $97\%$?

    $194$ liters. $97\%$ of $200$ liters: $0.97 \times 200 = 194$.

30. Which statement is correct if a table lists salt water $97$ and fresh water $3$ (same units)?

    Salt water is greater than fresh water. Compare the values: $97 > 3$ in the same units.

31. A chart shows $97\%$ ocean and $3\%$ other. Which category is fresh water?

    The $3\%$ category is fresh water. The smaller portion represents non-ocean water sources.

32. What fraction of Earth's water is fresh water if the data show $3\%$ fresh water?

    $\frac{3}{100}$. $3\%$ equals $3$ out of $100$ parts.

33. What is the approximate percent of Earth's water that is fresh water?

    About $3\%$ is fresh water. Only a tiny fraction is in lakes, rivers, ice, and groundwater.

34. Identify the correct conclusion from data showing $97\%$ salt water and $3\%$ fresh water.

    Earth has much more salt water than fresh water. $97\%$ is significantly greater than $3\%$.

35. Which is larger based on the data: $97\%$ salt water or $3\%$ fresh water?

    $97\%$ salt water. Compare the percentages: $97\% > 3\%$.

36. Which statement is supported by data: "Most Earth water is fresh" or "Most Earth water is salty"?

    Most Earth water is salty. $97\%$ salt water means most is salty.

37. What is the correct meaning of fresh water when comparing Earth's water sources?

    Water with very little dissolved salt. Contains minimal salt content, typically less than 0.5 parts per thousand.

38. What fraction of Earth's water is salt water if the data show $97\%$ salt water?

    $\frac{97}{100}$. $97\%$ equals $97$ out of $100$ parts.

39. What is the difference in percentage points between $97\%$ salt water and $3\%$ fresh water?

    $94$ percentage points. Subtract: $97\% - 3\% = 94\%$.

40. What type of water covers most of Earth's surface: salt water or fresh water?

    Salt water covers most of Earth's surface. Oceans contain salt water and cover about 71% of Earth.

41. Identify the fraction of Earth's water that is salt water when given $97\%$ salt water.

    Salt water is $\frac{97}{100}$ of Earth's water. $97\%$ equals $\frac{97}{100}$ in fraction form.

42. Find the fresh water percent if a dataset shows salt water is $98\%$ of Earth's water.

    $2\%$. Total must equal $100\%$, so $100\% - 98\% = 2\%$.

43. Which is larger: $\frac{97}{100}$ or $\frac{3}{100}$, and what does it represent here?

    $\frac{97}{100}$; it represents salt water. $\frac{97}{100}$ is much larger than $\frac{3}{100}$.

44. What type of water has a high amount of dissolved salts: salt water or fresh water?

    Salt water. Salt dissolves in ocean water, making it salty.

45. What is the correct meaning of salt water when comparing Earth's water sources?

    Water with dissolved salts; mostly found in oceans. Oceans contain minerals and salts dissolved from rocks and soil.

46. If a chart shows $100$ liters total, how many liters are salt water at $97\%$?

    $97$ liters. $97\%$ of $100$ liters equals $97$ liters.

47. Which option correctly compares two datasets: A has $97\%$ salt; B has $96\%$ salt?

    Dataset A has more salt water. Dataset A's $97\%$ is greater than Dataset B's $96\%$.

48. Identify the fraction of Earth's water that is fresh water when given $3\%$ fresh water.

    Fresh water is $\frac{3}{100}$ of Earth's water. $3\%$ equals $\frac{3}{100}$ in fraction form.

49. Which option correctly compares $97\%$ and $3\%$ using a subtraction difference?

    Difference is $94\%$. Subtract the smaller percent from the larger: $97\% - 3\% = 94\%$.

50. Identify the correct comparison: if salt water is $97\%$, what percent is not salt water?

    $3\%$. The remaining percent after salt water must be fresh water.

51. Find the fresh water amount if a dataset shows total water is $1000$ L and fresh water is $3\%$.

    $30$ L. Multiply total volume by the percent: $1000 \times 0.03 = 30$.

52. Which option best describes a pie chart showing $97\%$ salt water and $3\%$ fresh water?

    Salt water slice is much larger than fresh water slice. The $97\%$ slice takes up nearly the entire circle.

53. If a chart shows $100$ liters total, how many liters are fresh water at $3\%$?

    $3$ liters. $3\%$ of $100$ liters equals $3$ liters.

54. Which comparison is correct: salt water $97\%$ vs fresh water $3\%$, or salt water $3\%$ vs fresh water $97\%$?

    Salt water $97\%$ vs fresh water $3\%$ is correct. Earth's water is overwhelmingly salty, not fresh.

55. What is the ratio of salt water to fresh water using $97\%$ and $3\%$?

    $97:3$ (about $32:1$). For every 3 parts fresh water, there are 97 parts salt water.

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