1st Periodic Test - Science 8
1st Periodic Test - Science 8
1st Periodic Test - Science 8
SY 2022-2023
Name:___________________________ Grade/Section:________Date:_________Score:______
Multiple Choice. Encircle the letter of the correct answer.
18. Energy transferred as heat occurs between two bodies in thermal contact when they differ in which of
the following properties?
a. mass b. specific heat c. density d. temperature
19. When the net force is equal to zero the forces are said to be ____________.
a. Balanced b. Unbalanced d. Changing d. Unchanged
a. Isaac Newton
b. Law of Inertia
c. Law of Acceleration
d. Law of Interaction
23. This law states that “ The acceleration of an object is directly proportional to the force applied and
inversely proportional to its mass”
24. The scientist who proposed the “The Three Laws of Motion”
25. This law states that “ A body will remain at rest or move at constant velocity unless acted upon by an
external net or unbalanced force”
27. If the force you exert does not make an object move, it basically means
a. No work is done b. work is done c. working d. none of these
28. Work is done when the force applied to an object causes the object to have a __________
a. Displacement b. Force c. Magnitude d. Change
a. True
b. False
c. Maybe
d. It depends
34. Work is done on an object when the force applied to it covers a distance in the direction of the applied
force.
35. Work is a way of transferring energy
36. When work is done by an object, the object gains energy
37. When work is done on an object, the object loses energy
38. The energy of an object enables it to do work.
39. The unit for power is joules per second
40. Stored energy is known as Kinetic Energy