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9th grade working scientifically

9th grade (Year 10 in England) · 16 questions · Common Core: NGSS.SEP 5, NGSS.HS-PS1-7 · England: KS4 Working scientifically, KS4 Combined Science: Working scientifically

Name

Date

Score/ 16

  1. Question 1

    A calculator gives a density of 2918.6. Write it to 3 significant figures.

    Answer

  2. Question 2

    A balance reads −0.3 g with nothing on it. With a rock on it, it reads 49.8 g. What is the true mass of the rock, in g?

    Answerg

  3. Question 3

    Readings of the same length: 12.1, 12.1, 12.2, 12.1 cm. The true length is 13.0 cm. The readings are…

    • A. accurate and precise
    • B. accurate but not precise
    • C. neither repeatable nor close
    • D. precise but not accurate

  4. Question 4

    A calculator gives a density of 0.16608. Write it to 2 significant figures.

    Answer

  5. Question 5

    A balance reads 0.3 g with nothing on it. With a rock on it, it reads 31.2 g. What is the true mass of the rock, in g?

    Answerg

  6. Question 6

    Readings of the same length: 12.1, 12.1, 12.2, 12.1 cm. The true length is 13.0 cm. The readings are…

    • A. accurate and precise
    • B. neither repeatable nor close
    • C. accurate but not precise
    • D. precise but not accurate

  7. Question 7

    A calculator gives a density of 0.60269. Write it to 3 significant figures.

    Answer

  8. Question 8

    A balance reads 0.4 g with nothing on it. With a rock on it, it reads 48.3 g. What is the true mass of the rock, in g?

    Answerg

  9. Question 9

    What is the resolution of a ruler marked in millimetres?

    • A. 1 cm
    • B. 1 mm
    • C. 0.1 mm
    • D. 1 m

  10. Question 10

    A calculator gives a density of 0.096931. Write it to 3 significant figures.

    Answer

  11. Question 11

    A balance reads 0.5 g with nothing on it. With a rock on it, it reads 12 g. What is the true mass of the rock, in g?

    Answerg

  12. Question 12

    What is the resolution of a ruler marked in millimetres?

    • A. 1 mm
    • B. 1 m
    • C. 1 cm
    • D. 0.1 mm

  13. Question 13

    A calculator gives a density of 57.186. Write it to 3 significant figures.

    Answer

  14. Question 14

    A balance reads 0.5 g with nothing on it. With a rock on it, it reads 44.6 g. What is the true mass of the rock, in g?

    Answerg

  15. Question 15

    Timing a falling ball by hand gives slightly different values each time. This is mainly due to…

    • A. random error (human reaction time)
    • B. the ball changing mass
    • C. a zero error
    • D. gravity switching off

  16. Question 16

    A calculator gives a density of 0.90325. Write it to 2 significant figures.

    Answer

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Answer key: 9th grade working scientifically

  1. 1. 2920

  2. 2. 50.1 g

  3. 3. D. precise but not accurate

  4. 4. 0.17

  5. 5. 30.9 g

  6. 6. D. precise but not accurate

  7. 7. 0.603

  8. 8. 47.9 g

  9. 9. B. 1 mm

  10. 10. 0.0969

  11. 11. 11.5 g

  12. 12. A. 1 mm

  13. 13. 57.2

  14. 14. 44.1 g

  15. 15. A. random error (human reaction time)

  16. 16. 0.9