This is a worksheet designed to teach the concepts of "push" and "pull" forces. The task is to analyze each machine or tool shown and determine whether it primarily uses a pushing or pulling force to accomplish its job.
I will go through each item one by one, analyze its function, and provide the correct answer.
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1. Bulldozer
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Analysis: A bulldozer uses its large front blade to move earth, debris, or other materials. It does this by moving forward and forcing the material out of the way. This is a classic example of a
push.
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Answer: Push
2. Thumbtack (Pushpin)
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Analysis: To insert a thumbtack into a surface like a corkboard, you press down on the flat head. You are applying force in the direction of the point, driving it into the board. This action is a
push.
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Answer: Push
3. Pulley System (with weight)
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Analysis: The image shows a simple pulley with a weight hanging from it. To lift the weight, you must pull down on the rope. The force applied to the rope is a
pull.
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Answer: Pull
4. Person on Monkey Bars
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Analysis: To move across monkey bars, a person grips the bar and pulls their body forward. They use their arm muscles to exert an upward and forward force on the bar, which is a
pull.
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Answer: Pull
5. Shovel (for scooping)
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Analysis: When using a shovel to scoop dirt or snow, you typically push the shovel into the material with your foot or body weight. While lifting might involve a pull, the primary action of getting the material *onto* the shovel is a
push.
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Answer: Push
6. Rake
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Analysis: A rake is used to gather leaves or debris by dragging it towards you. You pull the rake handle towards your body, causing the tines to collect material. This is a
pull.
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Answer: Pull
7. Lawnmower
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Analysis: A lawnmower is pushed across the grass to cut it. The user applies force from behind, moving the machine forward. This is a
push.
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Answer: Push
8. Bicycle
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Analysis: To propel a bicycle forward, the rider pushes down on the pedals. The pedals are connected to the wheels via a chain, converting the downward push into forward motion. While steering involves some pulling, the primary propulsive force is a
push.
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Answer: Push
9. Wheelbarrow
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Analysis: A wheelbarrow is moved by gripping the handles and pulling it backward or pushing it forward. However, the most common and efficient way to move it, especially when loaded, is to
push it from behind. The handles are designed for the user to apply force from behind.
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Answer: Push
10. Train Engine
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Analysis: A train engine moves forward by pushing against the rails with its wheels. It exerts force to move itself and the cars it is attached to. The engine
pushes the entire train forward.
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Answer: Push
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Final Answer:
Here is the completed worksheet with the correct answers filled in:
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Bulldozer: Push
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Thumbtack: Push
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Pulley System: Pull
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Monkey Bars: Pull
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Shovel: Push
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Rake: Pull
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Lawnmower: Push
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Bicycle: Push
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Wheelbarrow: Push
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Train Engine: Push
Parent Tip: Review the logic above to help your child master the concept of forces and motion activity sheet.
