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Team Robinson O'Neal Primary

Robinson Oneal primary aaron daniel.jpeg

"Circuit"

Grade 4-6

By:  Aaron Daniel, Samira Ramgobin, Azariah George

Abstract:

The objective of this project was to compare the flow of electricity in the parallel circuit with that of the series circuit. A parallel circuit is a type of electrical circuit in which the current flows through multiple branches. In this type of circuit, each branch has its own load, which is connected across the same voltage source. This means that the voltage across each load is the same, while the current flowing through each branch may differ. On the other hand, a series circuit is a type of electrical circuit in which the current flows through a single path. In this type of circuit, the load is connected end-to-end, such that the same current flows through each load.

 

This means that the voltage across each load may differ, while the current flowing through the circuit is the same. This project provided evidence that the parallel circuit has multiple branches with individual loads, while the series circuit has a single path with loads connected end-to-end.

 

References:

Fraser, A.; Gilchrist, I. (1985). Starting Science: Book One. Oxford University Press.

Partridge, T. (1992, 1996). Starting Science: Book Three. Oxford University Press.

Cooke, A.; Martin, J. (2003). Key Stage 3 Science; Spectrum 9. Cambridge University Press.

Potter, S.; Oliver, R. (2003). Starting Science: Book One. Pearson Education Limit.

"Sound Waves"

Grade 4-6

By:  Kaeja Creque, Juneca Fergus, Mya Paul

Abstract:

The objective of this project was to show how sound waves can propagate through the medium of air. These waves are created by the vibrations of an object, which causes the surrounding particles to vibrate and transfer energy through the medium. One way to visualise the propagation of sound waves is the example of a cannon and candles. For instance, create a cannon using a paper roll. Secure a stretch balloon over each end of the tube. Make a hole in the stretched balloon over one end of the tube. Point the end with the hole in it facing the candles and tap the other end. The tapping causes the vibrations to move down the tube and push the air through the little hole at the opposite end, causing the flames of the candles to flitter and dance. We believe the reason for this is that the sound wave causes changes in the air pressure as it travels. When the wave reaches the candles, it causes fluctuations in the air pressure that push and pull on the flame causing it to move. This project provided evidence that sound waves propagate through a medium, such as air.

 

References:

Le Du, N.; Krasner, J. (2016). The Complete Middle School Study Guide: Every. Workman

Publishing CO., Inc.

Parsons, A. (1995). Make it Work: Sound. Scholastic Canada Ltd.

© National Science Fair 2023 by Ministry of Education, Youth Affairs and Sports.

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