Let's solve the "Force and Motion" worksheet step by step using the provided word bank:
Word Bank:
Force, work, friction, rest, gravity, motion, shape, spring scale, lubricants
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1. A force that resists motion when objects touch is called friction.
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Explanation: Friction is the force that opposes the relative motion between two surfaces in contact.
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2. A force that pulls two objects towards each other is called gravity.
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Explanation: Gravity is the attractive force between objects due to their mass. For example, Earth pulls objects toward it.
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3. Any push or pull is called force.
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Explanation: By definition, a force is a push or pull on an object.
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4. A change in position is called motion.
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Explanation: Motion refers to the movement of an object from one place to another.
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5. A tool used to measure the force is called spring scale.
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Explanation: A spring scale measures force (usually weight) by how much a spring stretches.
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6. When an object is not in motion it is called rest.
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Explanation: An object at rest has zero velocity; it is not moving.
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7. The unit of force is the newton.
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Explanation: The newton (N) is the SI unit of force. One newton is the force needed to accelerate a 1 kg mass at 1 m/s².
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8. A force moving an object at a distance is called work.
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Explanation: Work is done when a force causes an object to move. It is calculated as: Work = Force × Distance.
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9. On squeezing a gum tube, its shape changes.
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Explanation: Squeezing deforms the tube, changing its shape.
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10. Lubricants are used to reduce friction.
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Explanation: Lubricants like oil or grease are applied between surfaces to reduce friction and make motion smoother.
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✔ Final Answers:
1. friction
2. gravity
3. force
4. motion
5. spring scale
6. rest
7. newton
8. work
9. shape
10. lubricants
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Parent Tip: Review the logic above to help your child master the concept of force and motion worksheet 3rd grade.
