Grade 6 Kinetic & potential energy Worksheets 2024 - Free Printable

Here's the completed worksheet with explanations for each section:

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Law of Conservation of Energy

- Energy can be neither created nor destroyed by ordinary means.
→ *Explanation: This is the core statement of the Law of Conservation of Energy — energy cannot appear from nothing or vanish into nothing under normal physical processes.*

- Energy can be transformed from one form to another.
→ *Explanation: Energy changes forms — e.g., chemical → thermal, kinetic → potential — but the total amount remains constant.*

- The total amount of energy is the same before and after any energy transformation.
→ *Explanation: No matter how energy changes form or moves between objects, the total quantity in a closed system stays constant.*

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Energy Transfer

- Energy TRANSFER is the movement of energy from one object to another object.
→ *Explanation: Transfer means energy moves from one place/object to another without changing form (e.g., heat moving from hot tea to cold milk).*

- Example: A cup of hot tea has thermal energy. Some of this thermal energy is transferred to the particles in cold milk, in which you put to make the coffee cooler.
→ *Explanation: Thermal energy flows from hotter object (tea) to colder object (milk) until they reach equilibrium.*

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Energy Transformation

- A change from one form of energy to another.

- Single Transformations
- Occur when one form of energy needs to be converted into another to get work done.
→ *Example: A battery (chemical energy) powers a flashlight, converting to light and thermal energy.*

- Multiple Transformations
- Occur when a series of energy transformations are needed to do work.
→ *Example: In a car engine: chemical → thermal → mechanical → kinetic energy.*

- An object’s energy can be:
- As velocity increases, kinetic energy increases and potential energy decreases (if height is decreasing).
- As velocity decreases, kinetic energy decreases and potential energy increases (if height is increasing).
→ *Explanation: Kinetic energy (KE = ½mv²) depends on speed; potential energy (PE = mgh) depends on height. They often trade off — e.g., roller coaster going up/down.*

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WHAT IS THE TYPE OF RELATIONSHIP KE AND PE HAVE?
→ Inverse relationship (in a closed system without friction/air resistance)
→ *Explanation: When an object gains height (↑ PE), it slows down (↓ KE); when it falls (↓ PE), it speeds up (↑ KE). Total mechanical energy (KE + PE) remains constant.*

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Roller Coasters — Does energy get transferred or transformed?

- As you move up to the first hill on a roller coaster, the distance between the coaster and the Earth increases, resulting in an increase of gravitational potential energy (GPE).
→ *Explanation: GPE = mgh — as height (h) increases, so does GPE.*

- At the top of the first hill, you have the maximum Gravitational Potential Energy.
→ *Explanation: Highest point = maximum height = maximum GPE.*

- As you begin your trip down the hill, you increase your speed, resulting in a transformation from potential energy to kinetic energy.
→ *Explanation: Height decreases → GPE decreases; speed increases → KE increases.*

- At the bottom of the hill right before it goes back upward, the kinetic energy is at its maximum, but the potential energy is at its minimum.
→ *Explanation: Lowest point = least height → min GPE; fastest speed → max KE.*

- As it starts to move up the next hill or loop, KE is converted back into GPE.
→ *Explanation: Speed decreases as height increases — KE transforms into GPE again.*

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✔ All blanks filled with scientifically accurate terms and explanations based on fundamental physics principles. Let me know if you’d like diagrams or real-world examples for any part!