Activity 8 for Lost - a Stage Two Unit - Movement and Energy (machines)
Scroll to the subheading 'Observations' and read what you will be required to do after the clip and 'experiment'. Now you will be ready to watch the clip then try the demonstration.
Materials
Bottle tops
nails
piece of wood
hammer
Bottle tops
nails
piece of wood
hammer
Procedure
1. Experiment 1. Nail two bottle tops to a piece of wood so they can interlock with each other and act as gears.
2. Turn one bottle tops, and the other one touching it should turn as well. This is called a direct drive connection.
3. Experiment 2. Separate the bottle tops by a few centimeters and place a rubber band around them.
4. Turn one of the bottle tops and the other should turn too. This is called an indirect drive as a 'belt'(rubber band) is connecting the two gears.
1. Experiment 1. Nail two bottle tops to a piece of wood so they can interlock with each other and act as gears.
2. Turn one bottle tops, and the other one touching it should turn as well. This is called a direct drive connection.
3. Experiment 2. Separate the bottle tops by a few centimeters and place a rubber band around them.
4. Turn one of the bottle tops and the other should turn too. This is called an indirect drive as a 'belt'(rubber band) is connecting the two gears.
Observations
Record your observations in your notebook. Make a heading, 'Gearing Up'. Write and draw, add labels, your observations. The following questions may help you to focus.
1. From the clip: What sort of ratio were the gears set to climb hills?
2. From the clip: What sort of ratio were the gears set for speed?
3. Name as many things that you know, that use gears. Use the pictures on this page to get started.
Record your observations in your notebook. Make a heading, 'Gearing Up'. Write and draw, add labels, your observations. The following questions may help you to focus.
1. From the clip: What sort of ratio were the gears set to climb hills?
2. From the clip: What sort of ratio were the gears set for speed?
3. Name as many things that you know, that use gears. Use the pictures on this page to get started.
