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WorksheetsScience
Total questions: 51
Worksheet time: 51mins
Why simple machines are useful in our everyday living?
they reduce effort and extend extend the ability of people to perform tasks beyond their strength or ability
they make them stronger
it change the amount of energy
it decrease the amount of work
Which of the following best describes sound?
Sound energy things produce when objects vibrate
sound energy is present in everybody
it produced when sound waves move inward to a vibrating object or sound source
sound is the term to describe what is seen when sound waves pass through a medium to the source
What simple machine is made of an inclined plane wrapped around a cylinder?
lever
wedge
screw
inclined plane
Which forms of energy travels in a form of electromagnetic (ED waves?
A. heat energy
B. light energy
C. chemical energy
D. mechanical energy
What is the advantage of using LED (light emitting diode) lighting?
LEDs are less effective in wide area.
LEDs are more expensive than other lights.
LEDs has a long life compared to other lights.
LEDs can get damaged due to high voltage sometimes.
Which of the following is a way of conserving of energy?
Iron clothes every day.
Use a washing machine overload.
When the food boils, set your stove to high.
Turn off lights and other appliances when not in use.
In a playground, there's a boy and girl on a see saw. The boy may not be able to lift the girl up in the air using just his arms. On a see saw, though, the girl is sitting on one end and then the boy can easily push down on the other end and lift the girl. This is exactly how a see saw works and it is an example of lever. How are levers classified?
force applied to the effort arm
direction of force and efficiency
mechanical advantage of the tool
position of effort, resistance, and fulcrum
It is an inclined plane or two inclined planes that meet each other to form a sharp edge. It is usually good for cutting and piercing
lever
screw
wedge
pulley
Which of the following statements best describes a block-and-tackle pulley?
It is made up of a small wheel that turns into axle.
It is made of grooved wheel that turns about a stationary axle in which a rope moves.
It is made up of two pulleys, one fixed and another pulley which moves with the load.
It is made of a compound pulley, made of a combination of fixed and movable pulley.
Which of the following forms of energy travels in a form of electromagnetic (ED waves?
heat energy
light energy
chemical energy
mechanical energy
Justine was asked to make coffee by her mother. He went to the kitchen and made some by getting coffee, sugar, and coffee creamer from each canister. While opening the canister, he accidentally dropped it and broken into pieces because it was made of glass. Which of the following are the most accurate reason while he dropped the canister?
It was not fastened enough.
The canisters have broken grooves.
The canisters cover was interchanged by the previous user.
He was not holding it properly causing him to drop it because the cover was not fastened enough.
It is a simple machine that has a small disk or shaft called an axle that is attached to a wheel
lever
pulley
inclined plane
wheel and axle
Which of the following is the most appropriate description for a wedge?
It has sharp edges.
Two inclined plane that is put back-to-back.
Wedge are used as a separating or holding device.
A simple machine that is used to separate two objects or portions of two objects, through the application of force.
People sitting around a campfire can feel the heat from the fire. How are the people able to feel the heat from the fire without touching the fire?
The heat from the fire radiates from the fire to the people.
The heat from the fire is conducted through air molecules to the people.
The heat from the fire rises in the air and then settles around the people.
The heat from the fire travels through the ground and heats the ground around the people.
Which simple machine is best to use when moving big and heavy furniture at home?
pulley
lever
wedge
wheel and axle
What type of pulley is on a flagpole?
fixed pulley
block-and-tackle pulley
movable pulley
all of the above
A can opener is a combination of which simple machine?
a lever and a wedge
a wedge and a screw
a lever and an inclined plane
an inclined plane and a wedge
Which of the following best describes a pulley as simple machine?
A simple machine that is used in flagpoles.
A simple machine used for lifting heavy objects in constructions.
A wheel that carries a flexible rope, cord, cable, chain, or belt on its rim.
A pulley is a wheel with a groove along its edge, for holding a rope or cable, usually used in sets designed to reduce the amount of force needed to lift a load.
Which of the following shows innovation in the use of pulleys as a simple machine?
Raising a flag in a flagpole.
Lifting a pale of mixed cement in 3 story houses.
Drying clothes in a rope with pulleys on each end.
Used in a crane machine for construction of building.
What simple machine is bottle opener?
First-class-lever
Second-class-lever
Third-class-lever
A pulley system
Which of the following statements best describes the function of a wheel and axle?
Used to raise weighs.
It is used for raising weights or water buckets from wells.
Is made up of a circular frame that revolves on a shaft or rod.
Refers to the assembly formed by two discs of different diameter mounted so that they rotate together around the same axis.
Which shows that fiction is undesirable?
A. pushing furniture
B. lighting a matchstick
C. walking on wet floors
D. using the breaks when approaching a stoplight
Mary visits her longtime friend Ana. She goes to Laguna to meet her. Upon entering the house, she used doorbell to alert Ana of her arrival. In using doorbells and buzzers, electrical energy is transformed to what type of energy?
A. sound energy
B. heat energy
C. electrical energy
D. light energy
A screw is a special kind of what simple machine?
lever
wedge
inclined plane
wheel and axle
During a storm, you see lightning flash and then later hear thunder. What best explains this observation?
Light is an energy.
Sound must travel through matter.
Light travels faster than sound.
You were very close to the lightning.
Which of the following is NOT a way of conserving energy?
Melt frozen foods before cooking.
Use a large stove for a small pan.
Avoid frequent opening of refrigerators.
Use fluorescent bulbs instead of incandescent bulbs.
Which of the following best describes sound?
A. Sound is the energy things produce when objects vibrate.
B. Sound energy is present in everybody due to the motion of its molecules.
C. Sound energy is the energy produced when sound waves move inward to a vibrating object or sound source.
D.Sound is the term to describe what is seen when sound waves pass through a medium to the source.
A metal spoon was left in a pot of boiling soup. The cook burned a finger by touching the spoon. Why did the finger get burned?
The metal spoon insulated the cook's hand.
The metal spoon conducted heat to the cook's hand.
The metal spoon chemically reacted with the cook's hand.
The metal spoon conducted electricity to the cook's hand.
Why is it easier to slip when there is water on a smooth floor?
A. The water increases the friction between your feet and the floor.
B. The friction between your feet and the floor changes from kinetic to static friction.
C. The water is a lubricant and reduces the friction between your feet and the floor.
D. The friction between your feet and the floor changes from sliding kinetic friction to rolling kinetic friction.
The following are all examples of a wheel and axle, EXCEPT
flagpole
doorknob
eggbeater
sharpener
The Grade 6 pupils produced an advertisement below and posted on the billboard near their school. The following are what the advertisement is all about EXCEPT?
A. road rules
B. road safety
C. accident prone
D. avoidance of danger on the road
What form of energy is used in sonar for military purposes to detect and determine the location, size, and relative motion of underwater objects?
A. heat energy
B. sound energy
C. electrical energy
D. chemical energy
What eventually happens to a moving object when it moves along a surface?
A. It will stop immediately.
B. It will continuously move.
C. It will eventually slow down and stop.
D. It will move either to the right or left side and stop.
A boy is playing with a toy sledge. In which surface will it travel fastest?
A: a carpet
B a rough floor
C the wet floor
D. the polished floor
A baseball and a sheet of paper are dropped at the same time from the same height. What will occur if there is no air resistance?
A. The baseball will land first.
B. The paper will float slowly through the air.
C. The baseball will float slowly through the air.
D. The baseball and the paper will land at the same time.
Which of the following is an example of kinetic friction?
A. rolling ball
B. closed window
C. books inside the bag
D. sticky note on the wall
Why is it easier to push a cart inside the mall with tiled floor than outside with cemented floor?
A. Friction is lesser on a cemented floor.
B. Friction is greater on a cemented floor.
C. More force is exerted in tiled floor than in cemented floor.
D. More force is exerted in cemented floor than in tiled floor.
What is sound energy?
A Sound energy is ability of the human ear to perceive sound.
B. An energy that created form our throat and passes through our mouth.
C. Sound energy is the energy produced by sound vibrations as they travel through a specific medium.
D. Sound energy is the energy produced by sound not vibrations as they travel through a specific medium.
Which energy transformation occurs in a transistor radio?
A. Electrical energy to chemical to sound to heat
B. Chemical energy to electrical to sound to heat
C. Electrical energy to mechanical- to sound to light
D. Electrical energy to sound to mechanical to heat
Which surface will produce the least amount of friction?
A. fuzzy soccer field
B. grassy soccer field
C. gravel running track
D. smooth glass tabletop
What two factors will determine the strength of the force of friction?
A. speed and light
B. how fast the objects are going and on in a planet
C. how big the objects are and how hard you push them
D. how hard the surfaces push together and the type of surfaces involved
How can you best reduce friction between the bottom or feet of furniture and the floor?
A. by smoothing the surface.
B. by keeping the furniture on their place.
C. by applying lubricants like wax on the floor.
D. by putting wheels or rollers on the bottom or feet of the furniture
The inclined plane is a flat supporting surface tilted at an angle. Which of the following statements are TRUE?
The effort applied is greater than the distance.
The greater the effort applied the longer the distance.
The lesser angle machine, the longer the distance and the lesser the effort needed
All of the above.
Many appliances you use every day change electrical energy into other forms. When you turn on a fluorescent lamp, electrical energy is change to______and__________
A. heat and sound
B. light and heat
C. heat and nuclear
D. nuclear and heat
Which of the following shows that heat can be transformed into light?
A. Electrical energy is converted into light and heat energy in an electric bulb
B. Electrical energy is converted into heat and light energy in an electric bulb.
C. Chemical energy is converted into light and heat energy in an electric bulb
D. Chemical energy is converted into heat and light energy in an electric bulb.
When light strikes a round mirror on the floor, a spot of light is seen on the ceiling. What does this show?
Light is lost.
Light is broken.
Light is absorbed.
Light is reflected on the ceiling.
When you turned on an electric fan, what energy transformation takes place?
A. Electrical energy to sound energy
B. Electrical energy to nuclear energy
C. Electrical energy to chemical energy
D. Electrical energy to mechanical energy
Which of the following shows the presence of friction?
A. cars continuously roll down hills
B. things fall from smooth surfaces
C. people stay in place as they move
D. cars stop when the driver steps on the brakes
Which shows that friction is desirable? is
A. Friction allows us to grip things.
B. Friction makes objects difficult to move continuously.
C. Friction makes the walking on wet or polished floor difficult.
D. Friction converts energy into heat, noise and wear and tear to materials.
Which of the following gives the correct order of energy transformation in an electric bulb?
A. Electrical to Heat to Light,
B. Electrical - Chemical -Light
C, Electrical to Lights to Heat
D. Heat to Electrical to Light
Joy wants to listen to her favorite worship songs. She switches on the speaker and connect to her mobile phone. What can you infer with the energy transformation taking place?
A. Electricity can transform energy into music.
B. Electricity cannot be transformed into any form.
C. Electricity can be transformed into sound to heat.
D. Electricity can be transferred to speaker and make sound.
