Accuracy, precision, errors and significant figures
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
Question 1
A calculator gives a density of 945.33. Write it to 2 significant figures.
Answer
Question 2
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. precise but not accurate
- B. neither repeatable nor close
- C. accurate but not precise
- D. accurate and precise
Question 3
A balance reads 0.4 g with nothing on it. With a rock on it, it reads 19.2 g. What is the true mass of the rock, in g?
Answerg
Question 4
A calculator gives a density of 3217.1. Write it to 2 significant figures.
Answer
Question 5
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. neither repeatable nor close
- B. precise but not accurate
- C. accurate but not precise
- D. accurate and precise
Question 6
A balance reads 0.3 g with nothing on it. With a rock on it, it reads 38.4 g. What is the true mass of the rock, in g?
Answerg
Question 7
A calculator gives a density of 8095.8. Write it to 2 significant figures.
Answer
Question 8
What is the resolution of a ruler marked in millimetres?
- A. 1 mm
- B. 0.1 mm
- C. 1 cm
- D. 1 m
Question 9
A balance reads 0.4 g with nothing on it. With a rock on it, it reads 54.2 g. What is the true mass of the rock, in g?
Answerg
Question 10
A calculator gives a density of 4472.9. Write it to 2 significant figures.
Answer
Question 11
Timing a falling ball by hand gives slightly different values each time. This is mainly due to…
- A. the ball changing mass
- B. gravity switching off
- C. a zero error
- D. random error (human reaction time)
Question 12
A balance reads 0.3 g with nothing on it. With a rock on it, it reads 27.9 g. What is the true mass of the rock, in g?
Answerg
Question 13
A calculator gives a density of 7697.8. Write it to 2 significant figures.
Answer
Question 14
Timing a falling ball by hand gives slightly different values each time. This is mainly due to…
- A. gravity switching off
- B. a zero error
- C. random error (human reaction time)
- D. the ball changing mass
Question 15
A balance reads 0.5 g with nothing on it. With a rock on it, it reads 32.3 g. What is the true mass of the rock, in g?
Answerg
Question 16
A calculator gives a density of 0.037082. Write it to 2 significant figures.
Answer
All done? Color in the animal! · Free from eurekami.com/math