yeast experiment

in science we have yeast experiment.the objective on this experiment is to prove that cell need energy to grow.
in this experiment the material is:
- yeast
-hot water
-sugar
-2 beakers
-2 balloons

proses:
1,we need to put yeast and hot water in each beaker
2, put sugar in one of the beaker
3 directly close the beaker with balloon

if you want to know more about yeast, you can visit this site: http://www.graniteschools.org/jr/Wasatch/faculty/Stucki/Scientific/experiment/experiment_page_3.html

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Science AA (Talk show)

In this talk show i was in  group with Cephal, Kennard,Stanley and Jennifer. the topic was about  caring for our self and other. In this talk show Cephal is the host and Stanley is the resource person. we talk a little bit about caring for our self  and the talk show was very fast. if you want to know more about talk show you can visit this site: http://www.rogerdarlington.me.uk/Interview.html

electric circuit

this is my photo after the making of the electric circuit.i like this project because it makes me learn how hard to make an electric circuit.i apply my responsibility skill , i bring all the materials on time. i also apply the time management, i finish my work on time.

materials:
-14 alligator clips
-1m wire
-4 bulbs
-4 fittings
-4 battery
-2 battery holder
-2 pieces of buffalo paper
-1 roll of cello tape

way:
1.cut the wire
2.connect all the wire to the alligator clips
3.connect the bulbs to the fittings
4.connect them all
5.do the same thing for the other
note: arrange the circuit according to the type. either series circuit or parallele circuit.

Gravitational force and frictional forces

WHAT IS GRAVITATIONAL FORCE ?

gravitational force is a force that can act at a distance from an object. Gravitational force is the force of attraction between things and he earth.

Effect of Gravitational force:

Gravitational force is acting on us and all other object all the time.It is because of Gravitational force that we are able to stand on the ground and not float away . Gravitational force also has many other effects.

WHAT IS FRICTIONAL FORCE?

frictional force is a force that opposes motion. It is produced when 2 surface rub against each other.

effect of frictional force:

-slows down and stops object

-prevent an object form starting to move

-affect the movement of object on different surface.

gravitational force pulls all object downward and causes object have weight

frictional force which opposes motion and includes air and water resistance.

frictional force have many effects and can be useful or causes problem which can overcome by using lubricants or rollers and wheels.

making parachute

This is my picture when i'm making the parachute.

the things that we need is:

-big plastic bag

-scissors

-string

-small toy

The way:

first cut the plastic bag into circle.(TIPS:hold on the center and cut to make a circle)

then make 8 hole

after that tie the string on the 8 hole

last tie the string on the toy.

reflection:

i like to make parachute,it is very fun, i show responsible by bringing the materials on time.

the annual project

This is the architecture that we made.

my reflection:

i did my part in responsible , i bring the things that i should bring on time

i did my part in time management, i finish all the project on time . i really enjoy making the architecture. it was a bit complicated, i'll show you the way:

materials:

-5 different shape of boxes

-red and black paint

-spectra paper

-printed Chinese border

the way :

1. we need to ind the different size of the box.

2. stack the 5 different boxes, from the biggest to the smallest.

3.stick the printed border to the spectra paper.

4.put the papers between the boxes.

5.stick them together.

6 .paint red for the background and black for the window.

7.then let it dry.

the changes that occurs in this project is physical changes. it changes in the size and shape.

size:we cut the box into the different size and shape we want.

Ocean fact

-Around 70% of the Earth’s surface is covered by oceans.

-Ocean tides are caused by the Earth rotating while the Moon and Sun’s gravitational pull acts on ocean water.

-While there are hundreds of thousands of known marine life forms, there are many that are yet to be discovered, some scientists suggest that there could actually be millions of marine life forms out there.

-During winter the Arctic Ocean is almost completely covered in sea ice

you can fin more facts about ocean in http://www.sciencekids.co.nz/sciencefacts/earth/oceans.html