6 Questions
What is the purpose of gears in a machine?
To interlock with another gear
What happens to objects that are more dense than water?
They will sink
What would happen if you interlock a large gear with a small gear?
The small gear would rotate faster
What is needed to make the boats move across the water?
Sails and wind
What would happen if you place objects in a boat that is less dense than water?
The boat would float even higher
What is the purpose of creating a double gate?
To open from both the left and right sides
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.
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.
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