6th grade working scientifically

Question 1

Four repeat readings of a pulse rate after exercise (bpm): 69, 124, 122, 126. Which reading is anomalous (does not fit the pattern)?

• A. 69
• B. 126
• C. 124
• D. 122

Question 2

Convert 1700 g into kg.

Answer kg

Question 3

A cyclist travels at 90 km/h. What is this in m/s?

Answer m/s

Question 4

Conclusions: which statement is true?

• A. A larger sample gives more trustworthy results.
• B. If two things happen together, one must cause the other.
• C. You should ignore results that do not match your prediction.
• D. One result is enough to prove a theory.

Question 5

Conclusions: which statement is NOT true?

• A. If two things happen together, one must cause the other.
• B. Repeating an investigation makes results more reliable.
• C. Two variables can be linked (correlated) without one causing the other.
• D. A conclusion should be supported by the results.

Question 6

Four repeat readings of a pulse rate after exercise (bpm): 135, 134, 73, 135. Leave out the anomalous reading and work out the mean of the rest, to 1 decimal place.

Answer bpm

Question 7

Convert 7 h into min.

Answer min

Question 8

Results: the higher the ramp, the further the car rolled. Which conclusion fits?

• A. Lower ramps make cars go further.
• B. The ramp height has no effect.
• C. Increasing the ramp height increases the distance travelled.
• D. Heavier cars always go further.

Question 9

A group measured the time for a ball to roll down a ramp three times: 30, 29 and 28 s. What is the mean? Give your answer to 1 decimal place.

Answer s

Question 10

Four repeat readings of how far a toy car travelled (cm): 86, 123, 87, 85. Which reading is anomalous (does not fit the pattern)?

• A. 123
• B. 86
• C. 85
• D. 87

Question 11

Convert 930 cm into m.

Answer m

Question 12

A cyclist travels at 72 km/h. What is this in m/s?

Answer m/s

Question 13

Conclusions: which statement is true?

• A. Two variables can be linked (correlated) without one causing the other.
• B. If two things happen together, one must cause the other.
• C. You should ignore results that do not match your prediction.
• D. A conclusion can include amounts you did not test.

Question 14

Conclusions: which statement is NOT true?

• A. A larger sample gives more trustworthy results.
• B. A conclusion should be supported by the results.
• C. Repeating an investigation makes results more reliable.
• D. If two things happen together, one must cause the other.

Question 15

Four repeat readings of the temperature rise in a reaction (°C): 11, 12, 20, 9. Leave out the anomalous reading and work out the mean of the rest, to 1 decimal place.

Answer °C

Question 16

Convert 10 km into m.

Answer m