Wednesday, 21 February 2018

Pulley lab by Narmfon

Table of pulley lab

objectweight in airapparent weight in waterbuoyant force (weight in air-apparentpulley weight in airlength of string
weight 10.15N0.1N0.05N10N40.5N
weight 20.2N0.15N0.05N4N44N
weight 30.25N0.2N0.05N1.2N24N
weight 40.5N0.45N0.05N1.2N31.5N
weight 51N0.8N0.2N1N32.5N
weight 62N1.75N0.25N0.75N37N
weight 72.15N1.85N0.3N0.5N44N
weight 85N4N1N0.25N37.5N
weight 910N8N2N0.2N28N

Wednesday, 14 February 2018

Electric charge

Think About This
1. Infer Why did you rub the balloon on your sweaterPredict what might have happened if you simply touched the balloon to your sweater instead of rubbing it.
-When one object is rubbed against another, static electricity can be created. This is because the rubbing creates a negative charge that is carried by electrons. 
-If you just simply touch it there aren't any change transfer so there aren't any friction.
2. Key ConceptWhy do you think the balloon interacted the way it did with your sweater and with the stream of water?

Because the charge is uneven; therefore, it need to make contact to balance it self (equal)

Wednesday, 10 January 2018

mapping vector

Start point - M.201

East 6 steps
South 23 steps
East 14 steps
South 16 steps
West 37 steps
South 46 steps
West 15 steps
North 15 steps
West 18 steps
South 12 steps
End point- Auditorium

Wednesday, 15 November 2017

Exploring color

Activity A: 
 1. look at the monitor
 3.  work with another group—put a color paddle over flashlight, shine on white paper—so a red, a green and a blue

Red card
blue card
green card
yellow card
purple card
1 flashlight
Color by subtraction
first, take two color card and stick it together then get the flashlight and shine through it and take a look at the color.
It forms a new color due to the two-color that's overlapping with each other.
so by adding blue and green together the result is stunning! Wow! Green!
and by adding blue and red together the result is also stunning! Magenta!
r+g= yellow r+b=magenta b+g=green
 work with another group—put a color paddle over the flashlight, shine on white paper—so a red, a green, and a blue

Color by addition

 Activity b
 3.  view white paper through color paddles—record results
 4.  view colored objects through color paddles
 5.  if you have time, do activity b—color by subtraction--

Red card

blue card

green card

yellow card

purple card

2 flashlight

r+g=white r+b=white b+g=white

view white paper through color paddles—record results

   view colored objects through color paddles

It will form a white color on the paper sheet, unlike the subtraction one which will form a new color.

First, choose two color card and shine through it separately (do not put them together like the first one)

Wednesday, 13 September 2017

Icecream Lab

1)  why do we add salt to the ice?
to decrease the temperature
2)   why do we add the cookies and other things, only after the milk has frozen slightly
otherwise, it will melt together with the milk while it's tending to freeze.
3)  what are two factors that affect the freezing you think?
Ice, salt
4)  why do you need a bit of air in the bag?
To help it to move forward and backward.(easier to move)

Wednesday, 7 June 2017

Stone lab

7)Calculate the density of your minerals samples. How could you use the identities the densities to identify the minerals?
If the object density is the same it's the same but if the density is not the same it's not the same
8) Key concept would density or color be more useful in identifying a particular mineral? Explain your answer
Colors because it makes it's more clear to identify which one is it.