1. when you pluck the string of a guitar it was as _______ energy as it vibrates and then transform into sound energy
a. electrical energy
b. heat energy
c. light energy
d. mechanical energy

2. what energy transformation occurs when you rub your hands together
a. chemical heat energy
b. heat to mechanical energy
c. mechanical to mechanical
d. mechanical to heat energy

3. energy transformation is important in our daily living because _____

a. it gives different forms of energy that helps our work to become easier and faster

b. it created useful and not so important energy

c. it provides high consumption of electricity

d. it helps us to be in another place faster

4. which of these is not an example of an inclined plane

a. door
b. ladder
c.pulley
d. stairway

5. what type of simple machine is found on the floor of a shower room
a. wedge
b. inclined plane
c.pulley
d. screw

6. what is the best tool to get a nail from a piece of wood
a. a lever blended hammer
b. a screw screwdriver
c. a wheel and axle wagon
d. an inclined plane slide

7. lucas has a large volume of sand in a wheelbarrow in this situation the sand is the
a. load
b. lever
c. fulcrum
d. effort

pa help po guys ​