6 FORM PACE WORK 16/04/20
6 FORM PACE WORK 16/04/20
Тема: Прості машини
Read the words and find suitable definition for them:
1. inclined plane a) A simple machine consisting of a rigid bar pivoted on a fixed point and used to transmit force
2. machine b) A device consisting of fixed and moving parts that modifies mechanical energy and transmits it in a more useful form.
3. pulley c ) A wheel turned by or driving a belt.
4. wheel d) A solid disk or a rigid circular ring connected by spokes to a hub, designed to turn around an axle passed through the center.
5. lever e) A simple machine consisting of a rigid bar pivoted on a fixed point and used to transmit force, as in raising or moving a weight at one end by pushing down on the other.
Students do the task.
b) Teacher: Let’s prove your understanding of the words. Try to make your own sentences using these words.
4.2. Reading
There are 6 basic simple machines; the lever, the wheel and axle, the inclined plane, the wedge, the pulley, and the screw. Several of these simple machines are related to each other. But, each has a specific purpose in the world of doing work.
A lever is a stiff bar that rests on a support called a fulcrum which lifts or moves loads.
Levers are all around us. Some examples of levers are: door handles, the claws of a hammer (for removing nails), crowbars, light switches, bottle openers and hinges.
The wheel has always been considered a major invention in the history of mankind. But it really would not work as well as it does had it not been for the axle. An axle is a rod or pole centered in the wheel that allows the wheel to turn around it. The wheel then spins in a balanced circle to be used as transportation on a bike or to turn the hands of a clock. Gears are a form of the wheel and axle.
An inclined plane is a slanting surface connecting a lower level to a higher level.
Ramps are used in skateboard parks, wheelchair ramps and to get heavy equipment in and out of the back of trucks. But a modified version of a ramp is also found in stairs, escalators, ladders, walking paths, even chutes used for dropping your mail into the mailbox.
A wedge is an object with at least one slanting side ending in a sharp edge, which cuts material apart. Some examples of wedges that are used for separating might be a shovel, a knife, an axe, a pick axe, a saw, a needle, scissors, or an ice pick. But wedges can also hold things together as in the case of a staple, push pins, tack, nail, doorstop, or a shim.
A pulley is a simple machine that uses grooved wheels and a rope to raise, lower or move a load.
Pulleys are used in window blinds and drapery to move them up and down or back and forth.
The screw is really a twisted inclined plane. It allows movement from a lower position to a higher position but at the same time it moves it in a circle. That makes it take up less horizontal space. A screw can also act to hold things together in some cases.
Some examples of the uses of a screw are in a jar lid, a drill, a bolt, a light bulb, faucets, bottle caps and ball point pens. Circular stairways are also a form of a screw.
Teacher: Make up questions to the text.
Teacher: Answer the questions:
What is a simple machine?
Why do we need them?
What is a pulley? Examples
What is a lever? Examples
What is a wheel? Examples
What is a screw? Examples
What is a inclined plane? Examples
What is a Wedge? Examples
The purpose of a simple machine to make work easier by allowing for a push or pull to occur over an increased distance.
A: True
B: False
What is a simple machine that uses grooved wheels and a rope to raise, lower, or move a load?
A: lever
B: inclined plane
C: wheel and axel
D: pulley
What simple machine uses a wheel with a rod or rods through its center that will help it lift or move a load?
A: inclined plane
B: wheel and axle
C: screw
D: all of the above
What simple machine uses a slanted surface that connects a lower level to a higher level?
A: inclined plane
B: screw
C: wedge
D: lever
Which of the following would you use a pulley for?
A: hold pieces of plastic together
B: help guide a sail on a sailboat
C: cut food
D: all of the above
What type of simple machine is a seesaw on a playground?
A: inclined plane
B: pulley
C: wedge
D: lever
What type of a simple machine would the bottom of a light bulb be?
A: screw
B: wedge
C: lever
D: pulley
A fork would be an example of what type of simple machine?
A: pulley
B: wedge
C: lever
6 FORM PACE WORK 16/04/20
Тема: Прості машини
Read the words and find suitable definition for them:
1. inclined plane a) A simple machine consisting of a rigid bar pivoted on a fixed point and used to transmit force
2. machine b) A device consisting of fixed and moving parts that modifies mechanical energy and transmits it in a more useful form.
3. pulley c ) A wheel turned by or driving a belt.
4. wheel d) A solid disk or a rigid circular ring connected by spokes to a hub, designed to turn around an axle passed through the center.
5. lever e) A simple machine consisting of a rigid bar pivoted on a fixed point and used to transmit force, as in raising or moving a weight at one end by pushing down on the other.
Students do the task.
b) Teacher: Let’s prove your understanding of the words. Try to make your own sentences using these words.
4.2. Reading
There are 6 basic simple machines; the lever, the wheel and axle, the inclined plane, the wedge, the pulley, and the screw. Several of these simple machines are related to each other. But, each has a specific purpose in the world of doing work.
A lever is a stiff bar that rests on a support called a fulcrum which lifts or moves loads.
Levers are all around us. Some examples of levers are: door handles, the claws of a hammer (for removing nails), crowbars, light switches, bottle openers and hinges.
The wheel has always been considered a major invention in the history of mankind. But it really would not work as well as it does had it not been for the axle. An axle is a rod or pole centered in the wheel that allows the wheel to turn around it. The wheel then spins in a balanced circle to be used as transportation on a bike or to turn the hands of a clock. Gears are a form of the wheel and axle.
An inclined plane is a slanting surface connecting a lower level to a higher level.
Ramps are used in skateboard parks, wheelchair ramps and to get heavy equipment in and out of the back of trucks. But a modified version of a ramp is also found in stairs, escalators, ladders, walking paths, even chutes used for dropping your mail into the mailbox.
A wedge is an object with at least one slanting side ending in a sharp edge, which cuts material apart. Some examples of wedges that are used for separating might be a shovel, a knife, an axe, a pick axe, a saw, a needle, scissors, or an ice pick. But wedges can also hold things together as in the case of a staple, push pins, tack, nail, doorstop, or a shim.
A pulley is a simple machine that uses grooved wheels and a rope to raise, lower or move a load.
Pulleys are used in window blinds and drapery to move them up and down or back and forth.
The screw is really a twisted inclined plane. It allows movement from a lower position to a higher position but at the same time it moves it in a circle. That makes it take up less horizontal space. A screw can also act to hold things together in some cases.
Some examples of the uses of a screw are in a jar lid, a drill, a bolt, a light bulb, faucets, bottle caps and ball point pens. Circular stairways are also a form of a screw.
Teacher: Make up questions to the text.
Teacher: Answer the questions:
What is a simple machine?
Why do we need them?
What is a pulley? Examples
What is a lever? Examples
What is a wheel? Examples
What is a screw? Examples
What is a inclined plane? Examples
What is a Wedge? Examples
The purpose of a simple machine to make work easier by allowing for a push or pull to occur over an increased distance.
A: True
B: False
What is a simple machine that uses grooved wheels and a rope to raise, lower, or move a load?
A: lever
B: inclined plane
C: wheel and axel
D: pulley
What simple machine uses a wheel with a rod or rods through its center that will help it lift or move a load?
A: inclined plane
B: wheel and axle
C: screw
D: all of the above
What simple machine uses a slanted surface that connects a lower level to a higher level?
A: inclined plane
B: screw
C: wedge
D: lever
Which of the following would you use a pulley for?
A: hold pieces of plastic together
B: help guide a sail on a sailboat
C: cut food
D: all of the above
What type of simple machine is a seesaw on a playground?
A: inclined plane
B: pulley
C: wedge
D: lever
What type of a simple machine would the bottom of a light bulb be?
A: screw
B: wedge
C: lever
D: pulley
A fork would be an example of what type of simple machine?
A: pulley
B: wedge
C: lever
Коментарі
Дописати коментар