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- 1. Multiple Choice
An example of a smooth surface placed at an angle is:
- 2. Multiple Choice
The ability to do work is called __________
Power
Energy
Force
Friction
- 3. Multiple Choice
A simple machine that has a grooved wheel and a rope running between the grooves of the wheel.
Lever
Pulley
Wheel and axle
Screw
- 4. Multiple Choice
The following diagram shows a man pushing a table. Now the man is applying ________ on the table.
work
force
energy
muscles
- 5. Multiple Choice
The ultimate source of energy on earth?
the sun
coal
wind
plants
- 6. Multiple Choice
A STONE THROWN UPWARDS COMES DOWN BECAUSE OF ______________
mechanical energy
kinetic energy
wind energy
gravitational force of the earth
- 7. Multiple Choice
The instruments that make our work easier.
Force
Energy
Gravity
Machines
- 8. Multiple Choice
Smoother the surface, ________ the friction
smoother
lesser
more
equal
- 9. Multiple Choice
A spoon, a pair of scissors, and a long rod are examples of simple machines that can be used to lift or move heavy objects. Identify the simple machine.
an inclined plane
a lever
a pulley
Wedge
- 10. Multiple Choice
When a pinwheel is placed against the wind, it begins to spin. This proves that ___
moving air has energy
pinwheel has life
pin has energy
moving air has no energy
- 11. Multiple Choice
All living things obtain energy from ____________.
Light
Electricity
Food
Muscles
- 12. Multiple Choice
A push or a pull acting on an object.
Force
Energy
Work
Wind
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