An yeqi
Science E-portfolio
I visited the Science Centre for this activity.
List of places I went in order
1.Kinetic Garden
(a)"Impossible triange" exhibit
2. Sound Exhibit
3. Nature Exhibit​
​
Ace
I chose to do science as my term 2 ACE. I was assigned to do 
a) Fieldtrip report
Include what you see, hear, feel, smell, learnt. How did the trip enhance your Science knowledge?
You have to provide evidence of your visit (entry tickets, photographs).
Suggested places: Zoo, Bird Park, Butterfly Park, Reservoir, Science Centre, Nature Reserve
b) An Article Review
What was the author's point of view? What are your points of view? How has this research/work improved our life? What other suggestions do you have?
Suggested sources: Research papers, Science Journals, Magazines, Newspaper
c) A Self-made Resource
You have to make a simple resource which can be used to explain a concept / system / phenomenon.
Suggested ideas: Models, Brochures, Pamphlets, Puzzles/Worksheets with answers
Fieldtrip report
​I will write a brief introduction of my ACE below beside the three pictures. My full Ace is at the bottom of the page.
Basically, I talked about the advantages and disadvantages of Facebook and how it affected us socially. I came to a conclusion that Facebook is actually a curse as it has more bad than good points.
Article
Article Review
What I learnt.
Gravitation is a natural phenomenon by which objects with mass attract one another. It is most often thought as the agency which gives weight to an object with mass. Gravitation compels dispersed matter to coalesce*, thus making macroscopic* objects in the universe exist.
It is the one responsible for keeping the Earth orbiting around the sun,for any other planet orbiting around their sun in this case(the sun’s gravity pulls the earth towards it but not directly into it).It also causes the tidal waves rise and decend(the moons gravity pulling the waves).
The great scientist, Newton, also played a part in discovering the principles of Gravity, read up about him by clicking on his portrait.
Gravity Worksheet
Things I learnt.
You could only see 2 dimensional objects with 1 eye, you can only see
3 dimensional objects with 2 eyes. From there,i was also told that in
order to balance a level ,there must be sure that the force applied
to one side of the level multiplied by the distance between the force
and the support is the same as of the other side.
the shape and properties of the space between us affect how the sound waves moves
within it.
-Good music has direct access to our emotions.
After listening to a few soothing music, I instantly felt calm and peaceful. However, the music changed into a high pitched screeching noise which caused my heart to palpitate and feel frustrated.
- I also learnt the Doppler effect and experimented it on the street. When I hear the police car come closer, the sound of the siren becomes higher but when the police car moves away, the sound of the siren becomes lower. This is because of the wavelengths between me and the police car. The higher frequencies of the original sound get back to your ears faster than the lower frequencies. When the car comes closer the wavelength becomes smaller, causing a high frequency and vice versa.
-I also learnt the concept of Making Waves:
1. my father and i sat on the floor and each take one end of a Slinky and stretch it out along the floor.
Click on the facebook picture to see the article I reviewed on.
2. Longitudinal Waves.
This is an example of a Sound Wave. I must hold their end of the Slinky still. Have the other student hold and pull toward themselves several coils of the stretched metal Slinky and then let go of the coils. A longitudinal wave will be made and will travel back and forth over the length of the Slinky.
3. Transverse Waves. This is an example of a Water Wave. I must hold my end of the Slinky still on the floor. While holding the slinky on the floor, have my father move their end of a Slinky, in a single motion, back and forth very quickly (left and right), perpendicular to its stretched length. A transverse wave will be made.
4. Standing Waves. After we have demonstrated transverse waves, have them now make standing waves. One student must hold his or her end of the Slinky still on the floor. Have the other student move the Slinky constantly by changing the rate at which they move the Slinky back and forth. When a number of waves are sent through a medium and then reflected back upon themselves, standing waves can be generated. These specialized waves have places where the medium does not vibrate at all, called nodes, and other places where the medium vibrates the most, called antinodes. Standing waves have a changing numbers of nodes and antinodes.
Then, I went to the nature exhibit and I learnt that the exchange of carbon dioxide between living things, the atmosphere,
ocean and soil occurs as an endless natural cycle known as "the carbon
cycle"
Did you know?
Plants use carbon dioxide and sunlight to make their own food and grow. The carbon then becomes part of the plant. Plants that die and are buried may turn into fossil fuels as they are made of carbon, forming things like coal and oil over millions of years. When humans burn fossil fuels, most of the carbon quickly enters the atmosphere as carbon dioxide.
Carbon dioxide is a greenhouse gas and traps heat in the atmosphere. Without it and other greenhouse gases, Earth would be a frozen world.
After plenty of fun at the previous exhibit, i moved on into the "globalwarming" exhibit. I found out that the ocean can actually absorbcarbon dioxide! However, when more carbon dioxide dissolves in the ocean, the sea becomes more acidic. The rising acidity affects the quality of the shells of crabs,seashells,etc. The acid causes their shells to become more fragile. Their shells hold great properties in medical treatment. The medical properties in shells may cure diseases such as cancer, hepatitis. It is like throwing away the lottery before you even look at it. We can use renewable resources to produce electricity to reduce burning of fossil fuel
Did you know?
Humans have burned so much fuel that there is about 30% more carbon dioxide in the air today than there was about 150 years ago, and Earth is becoming a warmer place. In fact, ice cores show us that there is now more carbon dioxide in the atmosphere than there has been in the last 420,000 years.
