Observations, inferences and reading data

Grade 6 Science Worksheet - Challenge Me

Circle the best answer.

1. 1.

   Note: measured at 1 p.m. Esme measured the ground temperature at 1 p.m. on three days. Which comparison fits the data?

   • The grass averaged 6 °C warmer
   • Blacktop is warmer than grass in any town on Earth
   • The blacktop averaged 6 °C warmer than the grass
   • The blacktop was 33 °C warmer than the grass

2. Read this first

   Water soaked up (model data)

   Towel	Trial 1	Trial 2	Trial 3
   A	30 mL	32 mL	31 mL
   B	40 mL	20 mL	33 mL

3. 2.

   Jun tested two paper towels three times each. Which statement fits the data?

   • A soaked up more water on average than B in these tests
   • B's results are the steadier of the two
   • B soaked up more, since 40 mL is the top value
   • Both average 31 mL, but A's results are steadier
4. 3.

   Kira grew bean plants with and without plant food. Which statement does the graph support?

   • The gap between the groups was 13 cm at week 3
   • The gap grew each week, reaching 5 cm by week 3
   • Plant food doubles the growth of any plant it touches
   • The plants without plant food grew faster
5. 4.

   Luz's friend sees an empty cracker jar and says, "The crackers were eaten" is an observation. Which response is best?

   • Disagree: the empty jar is an inference too
   • Disagree: the empty jar is observed; what happened is inferred
   • Agree: anything you think about it is an observation
   • Agree: it is obvious, so it counts as observed

6. High temperature (model data)

   Day	High
   Monday	18 °C
   Tuesday	20 °C
   Wednesday	22 °C

7. 5.

   Milo's cousin says, "Each of the last three days was warmer, so tomorrow will be the hottest day of the year." Which response is best?

   • Agree: a rising trend has to keep rising each day
   • Agree: three days show the whole year
   • Disagree: the days were getting colder
   • Disagree: three days are too few to predict that
8. 6.

   Numbers, and descriptions such as color and texture. Noah's friend says qualitative data are useless because they have no numbers. Which response is best?

   • Agree: descriptions are just inferences
   • Disagree: color and texture are useful evidence too
   • Agree: data must be numbers to count
   • Disagree: qualitative data are numbers too

9. Plant height (model data)

   Week	Height	Note
   1	3 cm	none
   2	5 cm	none
   3	7 cm	none
   4	4 cm	from pot rim
   5	11 cm	none

10. 7.

    Ren measured a plant weekly: 3, 5, 7, 4 and 11 cm. Week 4 was measured from the pot's rim, not the soil. Which result is odd?

    • Week 1's 3 cm, the smallest
    • Week 4's 4 cm, measured from the wrong spot
    • There is no odd result; plants shrink at times
    • Week 5's 11 cm, the tallest

11. Classroom temperature (model data)

    Reading	Temperature	Note
    1	21 °C	none
    2	22 °C	none
    3	22 °C	none
    4	35 °C	in sunlight
    5	21 °C	none

12. 8.

    Tala recorded classroom temperatures of 21, 22, 22, 35 and 21 °C. The 35 °C reading was taken with the thermometer in direct sunlight. What should Tala do?

    • Record the room as hot, with no number
    • Keep 35 °C, since it was measured
    • Retake that reading out of the sunlight
    • Say the room heated up to 35 °C that day
13. 9.

    Ari's seedling was 2 cm on day 2, 4 cm on day 4 and 6 cm on day 6. About how tall will it be on day 8?

    • About 8 cm
    • About 4 cm
    • About 6 cm, as on day 6
    • About 16 cm

14. Ice mass (model data)

    Time	Mass
    0 min	30 g
    5 min	24 g
    10 min	18 g
    15 min	12 g

15. 10.

    Bo weighed an ice cube on a plate every 5 minutes. When will it be fully melted, if the pattern continues?

    • It will not melt, since the mass keeps growing
    • At 15 minutes, when it was 12 g
    • At about 25 minutes
    • The room must be very hot