WorksheetsEnergy, Forces, and Simple Machines Worksheet (Extraction)
Total questions: 40
Worksheet time: 20mins
What is the proper sequence for the transformation of energy in a car?
Chemical energy - Mechanical energy -Heat
Chemical energy - Mechanical energy - Heat - Sound
Mechanical energy - Heat - Chemical
Chemical energy - Electrical energy - Mechanical energy
Which surface provides the LEAST friction?
Tiled floor
Grass land
Sandy-road
Wood floor
Which picture shows a static type of friction?
A motorcycle stuck in mud
A heavy table at rest on the floor
A boy swimming in a pool
A person throwing a ball
Beating fifty eggs while baking bread uses what simple machine?
Screw
Wheel and axle
Pulley
Both A and B
Which of these should be done with sharp tools to prevent injuries to children?
Sharp tools and equipment should be kept inside the cabinets.
The children can be allowed to use knives.
The knife should be placed under the sofas and chairs.
Sharp tools should be put out of reach of the children.
Without air resistance, all objects fall at the same rate. This statement is:
True
False
Maybe
Neither true nor false
What force occurs when one object rubs against another object?
Gravity
Friction
Magnetic
Buoyant
Energy transformation or energy conversion is the process of ____________.
Changing of energy from one form to another.
Changing of energy into different sizes.
Changing of energy to thermal energy alone.
Changing of energy to heat energy alone.
Which of these will have the strongest gravitational pull on Earth?
A baby
A drinking glass
An elephant
A half sack of rice
What kind of simple machine has a sharp edge and helps spread or cut something?
Wedge
Lever
Pulley
Inclined plane
When an object is at rest or not moving, the energy it possesses is ________.
Potential energy
Kinetic energy
Thermal energy
Chemical energy
In a pair of kitchen tongs, which part acts as the fulcrum?
The joint where the two arms meet
The middle of the arms where you grip
The tips that pick up the food
None of the above
How do we stop a moving vehicle effectively?
Release the brake pedal to increase friction.
Press the brake pedal to increase friction.
Look at the brake pedal to increase friction.
Do nothing to increase the friction.
When you switch on a flashlight, the chemical energy in batteries is converted into ________.
Mechanical energy
Light energy
Sound energy
Chemical energy
A rolling ball possesses ________.
Kinetic energy
Potential energy
Thermal energy
Chemical energy
Which of the following describes sound energy?
It’s a form of energy present in everybody due to the motion of molecules.
It is an energy produced by vibrating bodies or objects.
It’s a form of energy produced by moving electrons.
It is a form of energy possessed by moving objects.
A staircase is an example of what simple machine?
Lever
Inclined plane
Wedge
Pulley
Why is it more difficult for us to go up a mountain than to go down?
We are pulled by the wind.
We are moving against gravity.
We are moving towards gravity.
None of the above
What energy transformation occurs when you rub your hands together?
Mechanical energy to Heat energy
Mechanical energy to Chemical energy
Chemical energy to Heat energy
Heat energy to Mechanical energy
Transformation of energy occurs when __________.
Energy is transformed from one form to another
Energy is created
There is electricity
Energy is wasted
Which of the following is a source of chemical energy?
Pencil
Firewood
Bicycle
Chalk
Raising a flag up a pole uses what simple machine?
Pulley
Screw
Wheel and axle
None of these
Energy transformation starts when _______ energy strikes the earth’s surface.
Radiant energy
Heat energy
Sound energy
Mechanical energy
Which bike will run faster based on its design?
Road bike because it is light, has thin tires, and is more aerodynamic.
Mountain bike because it is heavy and durable.
Mountain bike because it has no brake.
Road bike because it has wide tires and lots of grip.
Bringing heavy metal beams to the third floor of a construction site uses a _______.
Wedge
Pulley
Screw
Wheel and axle
Which statement does NOT accurately describe the effects of gravitational force?
Gravitational force pushes objects upward.
The farther you are from Earth, the lesser your weight.
Gravitational force is greater when objects are closer together.
The more distant the body from the Earth, the lesser the gravitational force.
Why are simple machines important in our daily lives?
They can cause damage to the environment.
They can transform energy and make work faster and easier.
They can produce energy and movement to create work.
They can create products easily.
Which form of energy is produced by moving electrons?
Sound
Electrical
Chemical
Heat
When you pluck a guitar string, it has _______ energy before it becomes sound.
Mechanical energy
Heat energy
Electrical energy
Light energy
Wheelchair ramps are examples of what type of simple machine?
Inclined plane
Screw
Wedge
Lever
Getting water from a deep ground well usually uses a _______.
Screw
Pulley
Wheel and axle
None of these
Which shows the correct transformation of energy in a television?
Electrical energy - Light - Sound - Heat
Mechanical energy - Sound - Light
Electrical energy - Light - Sound
Light - Electrical energy -Mechanical energy
Which simple machine is used in a car jack to change a flat tire?
Screw
Inclined plane
Pulley
Wheel and axle
Which of the following describes light energy?
It’s a form of energy that travels through space.
It is a form of energy possessed by moving objects.
It’s a form of energy produced by moving electrons.
It is an energy stored in plants.
A can opener is a combination of which simple machines?
Lever and wedge
Wedge and pulley
Inclined plane and wedge
Lever and pulley
As our body performs digestion, chemical energy is transformed into _______.
Light energy
Mechanical energy
Sound energy
Heat energy
When you light a candle, chemical energy is changed into _______.
Nuclear energy
Heat and light energy
Mechanical energy
Sound energy
Which is true about the Law of Conservation of Energy?
Energy can be destroyed.
Energy cannot be created nor destroyed, only transformed.
Energy can be created.
Energy can repeat itself and be created.
Anie’s electric stovetop circles glowed red. What can you infer?
The circles gave off both heat and light.
The circles gave off only light.
The circles gave off light but not heat.
The circles gave off light to help the cook see the stove.
Energy transformation is important in our daily living because _______.
It provides high consumption of electricity.
It helps our work become easier and faster by providing different forms of energy.
It helps us to be in another place faster.
It created useful and not so important energies.
