2.4 Molecule Collisions and Newton's Cradle

What is a Newton's Cradle?

• A toy with spheres hanging from a frame

• A type of molecule collision

• A type of energy transfer

• A type of kinetic energy

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What happens when you pull the sphere on one end of the Newton's Cradle and let it go?

• It swings back and stops when it hits the sphere next to it

• It swings up to the same height as the first sphere

• It transfers kinetic energy to the next sphere without moving

• It stays in place

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Why do the spheres in the middle of the Newton's Cradle stay in place?

• Because they are blocked by other spheres

• Because they have more kinetic energy

• Because they are made of steel

• Because they are heavier

What happens to the last sphere in the Newton's Cradle?

• It swings up and away to the same height and speed as the first sphere

• It stays in place

• It transfers kinetic energy to the next sphere without moving

• It swings back and stops when it hits the sphere next to it

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Why do the spheres in the Newton's Cradle eventually slow down and stop?

• Because some energy is converted to thermal energy

• Because they collide with each other

• Because they lose kinetic energy

• Because they are affected by gravity

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What do the collisions between molecules involve?

• Transfer of energy from one molecule to another

• Creation of energy

• Destruction of energy

• Change in the total amount of energy

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How do molecules change during a collision?

• They change direction or speed

• They stay the same

• They lose kinetic energy

• They gain potential energy

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What happens to the total amount of energy during a molecule collision?

• It doesn't change

• It increases

• It decreases

• It transforms into thermal energy

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What is the purpose of a Newton's Cradle?

• To demonstrate energy transfer and collisions

• To create kinetic energy

• To study molecular structures

• To generate thermal energy

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How does the Newton's Cradle demonstrate the idea of "Energy cannot be created or destroyed"

• It shows how collisions between molecules cause change in direction or speed.

• It shows that molecules can be removed from substances

• It shows how molecules can be added to substances

• It shows that energy can be fun

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