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# Test Your Science Knowledge with this Mind-Blowing Physics Quiz!

## Science Quiz

Choose the best option from the answers given under each question.

• Which of the following is the SI unit for the area?
A. m
B. cm²
C. m²
D. m³
• How many mm² are there in 1 cm²?
A. 10
B. 100
C. 1000
D 10000
• Choose the option that shows the greatest mass.
A. 1 kg
B. 1000 mg
C. 10000 mg
D 10000 g
• Sani wants to buy new shoes. He has to measure his feet to find out his correct shoe size. Which physical quantity of his feet should he measure?
A. Length
B. Thickness
C. Area
D Volume
• How many milligrams (mg) are in 0.5 kilograms (kg)?
A. 50 mg
B. 500 mg
C. 5000 mg
D 500 000 mg
• A student wishes to measure the diameter of a pencil down to an accuracy of 0.0001 m. Which measuring instrument should he use?
A. Metre rule
B. Vernier calipers
D Measuring cylinder
• Which instrument is best used to measure the circumference of a basketball?
A. Wooden ruler
B. Paper measuring tape
C. Vernier calipers
D Measuring cylinder
• A test tube measured 155 mm in length. Which of the following is also the correct length?
A. 0.155m
B. 1.55 mm
C. 1.55 cm
D 15.5 m
• Which instrument should you use to measure the length of a copper wire that is about 12.5 cm long?
A. Vernier calipers
B. Measuring cylinder
C. Metre rule
D Spring balance
• Which of the following instruments is most suitable to measure the surface area of a blade of grass?
A. Measuring tape
B. Graph paper
C. Ruler
D. Eureka can
• What is the most appropriate use for vernier calipers?
A. To measure the height of a man.
B. To measure the diameter of a string.
C. To measure the length of a book.
D. To measure the diameter of a test tube.
• Which of the following statements about mass is true?
A. Mass varies according to location.
B. Mass varies according to the shape of the object.
C. Mass varies according to the amount of matter in the object.
D. Mass and weight are equal and interchangeable.
• Which of the following reasons explains why alcohol thermometers are used to measure low temperatures?
A. Alcohol has a low melting point.
B. Alcohol can be seen clearly compared to mercury.
C. Alcohol has a high boiling point.
D. Alcohol does not evaporate easily.
• Which of the following is the most accurate time-measuring instrument?
A. Electronic stopwatch
B. Mechanical stopwatch
C. Hour glass
D. Digital watch
• Jason wants to find out if his classmates with longer legs can run faster than those with shorter legs. What measurements should he make to carry out his investigation?
A. The weight of his classmates and their running speed.
B. The height of his classmates and their running speed.
C. The length of his classmates’ legs and their running speed.
D. The length of his classmates’ feet and their running speed.
• What is the volume of a sphere that has a diameter of 6 cm?
A. 6πcm³
B. 9πcm³
C. 12πcm³
D. 36πcm³
• 12 marbles are dropped into a measuring cylinder which contains 14.2 cm³ of water. The final reading taken is 18.5 cm³. Which among the following options shows the volume of each marble?
A. 0.36 cm³
B. 1.18 cm³
C. 1.54 cm³
D. 2.73 cm³
• How many millimeters are 4.5 metres?
A. 450 mm
B. 4500 mm
C. 0.45 mm
D. 45000mm
• How many seconds is 2.5 minutes?
A. 150 s
B. 250 s
C. 125 s
D. 175 s
• How many kilojoules are 3600000 Joules?
A. 3600 kJ
B. 360 kJ
C. 36 kJ
D. 3.6 kJ
• What equation could be used to find the volume of a rectangular box?
A. Volume = length × height × width
B. Volume = length + width + height
C. Volume = length × width
D. Volume = length + width
• Why do you think an ice cube doesn’t float in the air?
A. Water is less dense than air
B. Air is denser than ice
C. An ice cube is denser than air
D. Air has more pressure

1. C | 2. B | 3. D | 4. A | 5. D | 6. B | 7. B | 8. A | 9. C | 10. B | 11. D | 12. C | 13. C | 14. A | 15. C | 16. D | 17. D | 18. B | 19. A | 20. A | 21. A | 22. C