Why is it important to use appropriate instrument in measuring?

A. It gives exact measurement.

B. The measurements vary.

C. Using nonstandard measuring instrument will give inaccurate measurement.

D. Both a and c

17. What instrument will you use if you want to measure the length of your pencil?

A. tape measure

B. meter stick

C. ruler

D. zigzag rule

18. Force is measured in which units?

A. degrees

B. meter

C. gram

D. newton

19. Speed is the rate of motion and expresses as a measurement of distance moved during a period of

time. Which of the following shows the correct unit of speed?

A. meter C. meter per second B. kilometers per hour D. both B and c

20. Which of the following is the disadvantage/s of using nonstandard measuring instrument like body parts?

A. Using measuring devices give precise and exact measurement.

B. Using nonstandard measuring instrument will give inaccurate measurement.

C. Standards of measurement help people process their data accurately.

D. all of the above

21. Which of the following drawings are example of motion?



22. A car is sailing from the port. Compared to which reference point is the ship in motion?

A. the sea B. the port C. the captain of the ship D. the cargo the ship carries

23. Which is an ideal reference point?

A. a colored object B. a non-moving landmark

C. a person running D. a cloud in the sky

24.A circuit has power supply, load, switch and a __________.

A. Battery

B. Bulb

C. Wires

D. Motor

25.What supplies energy in an electric circuit?

A. conductor B. Light bulb C. Wire

D. A battery

26.What is the function of a power source in a circuit?

A. It provides a steady source of electricity

B. It provides a means through which the circuit can be broken

C. It opens and closes the circuit

D. It resist the flow of electrons

27.What might happen if wires weren't protected with rubber or plastic?

A. The power source will no longer provide a flow of current

B. We would be harmed from electric shock

C. The circuit would be broken

D. The current will not flow

28. If you travel 80km in 2 hours, what was your average speed?

A. 10 km/h B. 40 km/h C. 20 km/h D. 4 km/ h

29. Which one is the example of a conductor?

a. plastic glass b. spoon made of metal c. paper plate

d. wood

30.Which one is the example of insulator?

a. rubber

B. golden fork

c. needle

d. coins​