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

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

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

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

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

   • Agree: it is obvious, so it counts as observed
   • 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

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?

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

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

9. Bounce height (model data)

   Trial	Bounce	Note
   1	42 cm	none
   2	41 cm	none
   3	18 cm	hit a book
   4	43 cm	none

10. 7.

    Pia's ball bounced 42, 41, 18 and 43 cm. On the 18 cm trial it hit the edge of a book. What should Pia do?

    • Stop testing, since the data are ruined
    • Report 18 cm as the result
    • Average the four trials and leave no note
    • Note the cause and redo that trial

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?

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

13. Water left (model data)

    Day	Water
    0	200 mL
    1	190 mL
    2	180 mL
    3	170 mL

14. 9.

    Zee left an open glass of water on a shelf and measured it daily. About how much water will be left on day 5?

    • About 250 mL
    • About 170 mL, as on day 3
    • No water left by day 5
    • About 150 mL
15. 10.

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