Colossal Collisions activity B3. More with marbles – the impacts of head-on collisions can be observed and even measured.
This is a more controlled version of the previous activity. The impacts of head-on collisions can be observed and even measured.
Students should be looking for patterns and thinking about where the energy of the collision goes.
Discuss what your students think about this being a “fair” test.
The extension activity is one solution for addressing this variable.
This activity can be made measurable by using the flicking part of a ballpoint pen to create a consistent force. The distance that the last marble moves can then be measured.
Repeat measurements can be made to make the data more reliable.
Measurements of other combinations can be made also.
In class discussion, add the observations and findings of this investigation to the chart you started with the Bang activity.
Students may have misconceptions about the answer, so it is useful to refer to the evidence. What have we seen?
Adding multiple experiences means they have more evidence to draw on to develop their answer and be sure of what they are finding.
What happens when marbles crash?
Observations / Patterns
What we think was the cause of this observation or pattern?
How does this help us answer the big question?
Straight line impacts
Trial 1: “when the marbles were spaced out - the flicked marble bumped into the 2nd one which bumped into the 3rd one. The third one didn’t roll far.”
Trial 2: ...
The crash energy kind of got passed on from one to the other”
“It didn’t travel as far when the marbles weren’t touching”
“The energy seems to move from one marble to the next”
Investigating in Science - exploring, predicting, defining, analysing.
Physical World, Achievement Objective: explore, describe and represent patterns and trends for everyday examples of physical phenomena, such as movement, forces etc.
Energy is not lost; it changes forms.
The students can…