SA2 Science

Exam date : 25 Oct (Fri)

Topics: all of P3 and P4 topics

Diversity:
- living and non-living things
- diversity of living things
- materials

Cycle:
- life cycle
- matter

Systems:
- Plant
- Human

Interactions:
- Magnets

Energy:
- Light
- Heat

Photosynthesis Song

check it out:

http://www.youtube.com/watch?v=tSHmwIZ9FNw

Ways to improve results

1) Interacting with nature boosts memory and concentration levels:
http://www.telegraph.co.uk/health/healthnews/3948948/Walking-in-the-countryside-is-good-for-the-brain-as-well-as-the-body.html

2) Studies show that increasing your child’s sleep by as little as half an hour can dramatically improve school performance:
http://www.betterhealth.vic.gov.au/bhcv2/bhcarticles.nsf/pages/sleep_deprivation?open

Interesting precision videos

1) from Honda. this is precision.
http://www.youtube.com/watch?v=_ve4M4UsJQo

2) music video OK GO: rube goldberg machine video
http://www.youtube.com/watch?v=qybUFnY7Y8w

Left and Right Brain?

You use more of left brain or right brain?
Left is Logic; right is creativity.
Take this test to find out
http://web-us.com/brain/braindominance.htm

Website full of fun experiments

try this during your Sep holidays

http://tryscience.org/

Bacteria is good too!

click on image to enlarge

which metal conducts heat the best?

best conductor of heat is : Silver

Copper
Gold
Aluminum
Beryllium
Magnesium
Zinc
Brass
Nickel
Iron
Platinum
Tin
Steel
Antimony
Stainless Steel
Mercury

!Wild places in Singapore!

Think Singapore is boring? check out these places:

http://www.wildsingapore.com/places/index.html

How to be smarter?

well, you can follow these steps:

a. approach things in a step by step manner
b. group similar things together to discuss similarities and differences
c. follow instructions
d. detect & complete patterns
e. develop your language skills

If your IQ score is more than 130, you are a genius!

Make a Balloon Compass

watch the video here:

http://www.youtube.com/watch?v=mC_n80HuUM4

Ans to Sep Holiday Work (HEAT)

1a) The rubber stopper will pop out.  Air in the flask expanded when heated and push the rubber stopper out.

1b) The cork stopper will pop out.  Carbon dioxide in the drink gained heat and expanded when heated and push the cork stopper out.

2a) Container A gains more heat as it has a larger contact area with the hot plate.

2b) Yes, adding water will increase the contact area between ice water and bottles, thus the bottles can lose more heat to the ice and be colder faster.

3a) The flask expanded first when heated and thus the ink drop a little.  The air in the flask expanded next and pushed the ink drop up.

3b) Air in the lantern gains heat and expands.  This hot air rises and pushes the lantern up.

4a) The box reflected light from the lamp into the girl’s eyes.

4b) John

Japanese Paper Pot

The paper is not burnt!
Heat is conducted away quickly by the metal sieve (a good conductor of heat) to the surroundings, not to the paper.
Click on the image to enlarge it.