Podcast
Questions and Answers
What is the purpose of gears in a machine?
What is the purpose of gears in a machine?
What happens to objects that are more dense than water?
What happens to objects that are more dense than water?
What would happen if you interlock a large gear with a small gear?
What would happen if you interlock a large gear with a small gear?
What is needed to make the boats move across the water?
What is needed to make the boats move across the water?
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What would happen if you place objects in a boat that is less dense than water?
What would happen if you place objects in a boat that is less dense than water?
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What is the purpose of creating a double gate?
What is the purpose of creating a double gate?
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Study Notes
Density
- Density refers to how close together the molecules of an object are.
- Objects that are less dense than water will float.
- Objects that are more dense than water will sink.
Sailing Boats
- Parker, the park manager, wants to find a way to make four boats move across the water.
- Teresa suggests using materials to make sails.
- The concept of "wind" is needed to make the boats move.
Objects in Boats
- Placing objects in a boat will affect its movement.
Gears
- Gears are rotating parts of a machine with teeth that can interlock with another gear.
- The direction of gear rotation depends on the interlocked gears.
- When a large gear is interlocked with a small gear, the large gear turns slowly and the small gear turns quickly.
- When two gears of the same size are interlocked, they turn at the same speed.
Gates
- A double gate can be created to open from both the left and right sides.
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Description
Understanding density and buoyancy concepts, applicable to objects in water. Parker, the park manager, needs to find a way to make boats move across the water.
