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प्रश्न
Read the conversation of the simple machines. Take roles to play. Then discuss in pairs to describe any simple machine. Create your own storyboard and take roles to play.
Jack: Don't you know how simple machines make your life easy?
Jimmy: Um... I don't know what simple machines are.
Jack: Simple machines are mechanical devices for applying force like a wedge or ramp.
Jimmy: Oh! wow! How I did not know this!
Jack: Like the wheels on hospital bed and IV pole. They help you move people faster by reducing the friction.
Jimmy: Is the stick over there that the TV is attached to, is that a simple machine too?
Jack: Yes it is, it's a lever. The wheels on the bus are simple machines, they make the bus move.
Jimmy: What about the doors?
Jack: 'Yeah' the driver pulls a lever and the doors open and you climb up the inclined plane aka the stairs. The cable in the elevator is wrapped around a groove in the wheel and axle, an electric motor pulls the cable, lifting the car between floors.
Jimmy: So the wheels on the rolling chair are too by rolling the chair back instead of lifting the chair back.
Jack: 'Yes' they are, they move the chair and reduce the friction.
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उत्तर
Do it yourself.
APPEARS IN
संबंधित प्रश्न
Figures of speech
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(e.g.) How handsome are your gauzy wings, how brilliant are your eyes!
Identify the figures of speech.
”Your eyes are like the diamond bright, but mine are dull as lead!”
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Change the following into Indirect Speech.
He said to me, “Wait until I come.”
Change the following into Direct Speech.
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Hello, Galen Today I received a postcard from Pushpa. Remember I had told you that She has gone to Sri Lanka on a holiday? Well, she has written from Colombo. She has written that ____________ Orphanage. It ____________ elephants. She said that it is the biggest herd of elephants in the world that is living under human supervision. She also added that she ____________ because ____________. The Elephant Orphanage ____________ . She said that ____________ national park. She ____________ next week and added that ____________ then.
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- Why did you become a teacher?
- How do you come to school every day?
- Do you have any pets?
- What kinds of books do you like to read?
- What are your hobbies?
Now add more words with and and put them inside the bubbles.
Ram is a curious little boy. He is always asking questions. One day he came home and asked his grandfather questions like –
- Why can’t we look at the sun during a solar eclipse?
- Why can’t we touch the sun?
- Why can’t we go out to play in the dark?
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