Science

Published on November 3rd, 2017 | by Science Editor

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Term 1: Science Update

A summary of what’s being on in Senior School Science this term.

Outstanding Cambridge Learner Award

Congratulations to Elkie Chan for achieving the highest mark in China for IGCSE Biology.

A fantastic achievement! SG

Double Helix Club Update

In the Double Helix Science Club , grade 7 and 8 students have been exploring Science beyond the curriculum. We got up close and inside a frog as we carried out a dissection. We also investigated the solid/liquid properties of a non Newtonian fluid by making Halloween themed slime. Next week, we are investigating the  aerodynamics of different model paper airplanes. SG

 

Grade 7 Update

Grade 7 students are investigating the question “is there a universal beauty?” Throughout the year they will be gathering more information to answer this question with evidence from all of their classes. Currently they are completing a math project and a science lab report which are both investigating beauty in body proportions. In science class, they learned about the Vetruvian Man (a famous drawing by Leonardo Davinci) and collected class data on the proportions of their own height to arm span.

Through this study, they are connecting their knowledge of math ratios with the biological concept of variation within a species while thinking about our cross curricular question about a universal beauty. TB

 

Grade 8 Update

The grade 8 students have explored  key concepts related to magnetism and electromagnetism through a scientific investigation involving electromagnets. In our Magnetism unit, the students have investigated how certain factors such as the size of current and the number of coils around the solenoid affect the strength of an electromagnet. This task has allowed the students to test their hypotheses and carry out the investigation independently. The students have also collected data and have outlined their conclusions to their problem. Ultimately, they have evaluated their methods to reinforce their own understanding of conducting a valid experiment and obtaining reliable results.RO

Grade 9 Update

Grade 9 Biology students used fresh liver to investigate the action of the enzyme catalase on hydrogen peroxide. By varying the temperature, they could see the effects on rate of reaction, as well as denaturation. Moving forward, this knowledge will be applied to the function of enzymes in our own digestion.” NS

Grade 10 Update

Biology: The Inheritance of gender

The grade 10 biologists have been studying Inheritance this term. We first looked at how genes store the information to make proteins and how proteins are synthesized at the ribosomes in the cytoplasm. We then went on to study the inheritance of characteristic like animal coat colour, colour of peas, eye colour, hair colour and blood type. We modeled the inheritance of gender by using a simple coin toss game to show how gender is determined by the X and Y chromosomes. SG

Grade 11 Update

ESS: The intricacies of food webs
Students in grade 11 ESS have been discussing the interactions of species with their environment.  Feeding relationships can be modeled with food chains or more complex food webs.  Students collaborated to create a food web for a mountain ecosystem. They needed to group species into tropic levels and had to research the types of food each species typically consumes in order to build their web. EN

Tropospheric ozone
Did you know? When ozone is released at street level from cars and industry, it is considered a pollutant! This tropospheric ozone is harmful to humans and causes respiratory illnesses. However, when ozone is present in the high atmosphere – the ozone layer- it serves to perfect our earth and us from harmful UV radiation.
Students in grade 12 ESS created their own ozone test strips.  We will be conducting an experiment to test for tropospheric ozone levels around Shanghai. Our test strips will change color and allow us to determine the ozone concentration. EN

Grade 12 Update

PHYSICS: Internal resistance of a cell

Batteries and cells are commonly used as a potential difference is required to operate any kind of electrical devices. A battery consists of two or more cells joined together, inside a battery, there is a reaction which converts chemical energy into electrical energy, however, real batteries have some internal resistance that is responsible for the conversion of electrical energy into heat. Students in Grade 12 were designing a method to determine the internal resistance of a battery.

This experiment helped students to understand two fundamental concepts in electricity: Electromotive force [e.m.f] and terminal voltage of a battery. AO

CHEMISTRY: Integrating Data Loggers.

Over the last few weeks we have actively integrated data loggers in our Chemistry class rooms . In the picture is the infra red sensor drop counter used to determine volume during all types of nitration. AO

 

 

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