20. Why is it that you arte advised not to have octopus connections at home?

A. It overloads the whole circuit
C. It is fine to have octopus connections
B. It is hard to untangle the wires
D. It divides the energy among the appliances

21. What does EM in EM waves stand for?
A. Electromagnet
C. Electrical
B. electromagnets
D. electromagnetic

22. Which does NOT contain a turbine inside to create electricity?
A. Geothermal power plant C. Hydroelectric power plant
B. Solar power plant
D. Wind mill power plant

23. Which of the following objects rely on gravitational potential energy?
A. bow
B. Mortar and pestle
C. Rubber band
D. Strings

24. How does a solar vane function?
A. It harnesses the energy from the sun
B. It absorbs energy from the sun and the wind.
C. It gathers energy from the water heated by the sun
D. Turbines turn while absorbing the energy from the sun.

25. What is the importance of putting the springs in motorcycle?
A. The make the motorcyycle lighter.
B. The springs make the motorcycle go faster
C. The springs make the motorcycle fuel-efficient
D. the springs serve as a shock absorver, making less bumpy.​