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Activity 1 for Lost - a Stage Two Unit - Movement and Energy (machines)
The longest side of the triangle is an inclined plane.
Information
RAMP: The inclined plane is a very simple machine. It is a sloping surface that connects two points together. We call it a ramp. The longer the distance of the ramp, the less effort it takes to move an object, however, it will take a longer time to do the work. It is believed that the pyramids in Egypt were built using ramps to pull up the enormous blocks of stone.
SCREW: Take an inclined plane and wrap it around a cylinder. Its sharp edge becomes another simple tool, the screw.
Materials
- Pencil
- A4 paper
- Colored felt tip marker
- Scissors
Procedure
- Cut a triangle from the paper by cutting the paper from the top right corner to the bottom left corner.
- Use the felt tip marker to color the longest edge of the triangle.
- Position the shortest side of the triangle along the side of the pencil and then evenly wrap the paper around the pencil by rolling the pencil.
Observations
Record your observations in your notebook. Make a heading, 'Ramp and Screws'. Write or draw your observations. Don't forget to label your drawings. The following questions may help you to focus.
1. What have you made?
2. How is a screw different to a nail? Look at the picture of the screw at the top of the page and the nail picture at the bottom of the page.
3. Why do you think that a screw might be used instead of a nail ?
4. Name some areas where you might find an inclined plane. Yes, you can say a screw after all you just made one by wrapping an inclined plane around a cylinder (pencil).
Record your observations in your notebook. Make a heading, 'Ramp and Screws'. Write or draw your observations. Don't forget to label your drawings. The following questions may help you to focus.
1. What have you made?
2. How is a screw different to a nail? Look at the picture of the screw at the top of the page and the nail picture at the bottom of the page.
3. Why do you think that a screw might be used instead of a nail ?
4. Name some areas where you might find an inclined plane. Yes, you can say a screw after all you just made one by wrapping an inclined plane around a cylinder (pencil).