October 30th and 31st

Hey everybody it's Alex :). Sorry about Thursday-my bad! To make up for it I'm going to do both Thursday the 30th scribe and Friday the 31st scribe.

Thursday

On Thursday we corrected the test. In case you missed that I'll go over it.

1) a) Numeric
b) Symbolic
c) Visual
d) Graphical

2) e
j
a
h
i
f
b
d
g
c

3) This would be an observation because you're realizing and observing that when you tilt the box something is rolling around inside it.

4) Yes, this could be an example of a scientific model because stating that there is a marble in the box gives us a mental picture to work with and allows us to picture a object rolling around in the box more accurately.

5) The type of evidential arguments that would support this statement are; coke has the best flavour, is the most accessible soft drink (sold everywhere), everyone drinks it and it has the best price.

6) a) 2
b) 4
c) 1
d) 4
e) 3

7) a) 25.6cm
b) 4.5 x 10 to the -4

8) For question 8 you had to make a graph. Make sure you plotted the points correctly, had a title for your graph and had Time (s) on your x-axis and Position (m) on your y-axis.
b) Linear
c) Position varies directly with time.
d) To calculate the slope you must choose two points on your graph that lie where the vertical and horizontal lines intersect. Then plug your two points into this equation:
Y2-Y1/X2-X1
Then make sure that you put the answer in decimal form not fractional form.

On Thursday we also did a lab. This lab was based on Newton's particle model for the refraction of light. We rolled a ball down a ramp and measured the refraction of the ball rolling from the higher level to the lower level. We then graphed this. It was a fun lab the metal balls were shiny and pretty :).

Well that's Thursday now to Friday.

The first thing we did on Friday is we corrected the yellow sheet. It looked like this ( sorry I don't know how to make a table on this post):

Phenomena Supporting Argument

Rectilinear Light travels in straight lines when sun rays pass through clouds,
Propagation shadows have sharp edges.

Reflection Very hard spheres collide with very hard surfaces and bounce off
at the same angle.

Refraction When a ball rolls down a ramp from a higher surface to a lower
surface it bends toward the normal.

Dispersion When white light passes through a prism the particles of smaller
mass fall to the bottom of the spectrum.

Diffraction Newton felt that the beam bending outward from a slit resulted
from the interactions and collisions between the light particles
at the edge of the slit.

Partial Reflection/ Newton proposed the "theory of fits". "Fit" for easy reflection.
Refraction "Fit" for easy refraction. (Weak explanation).

Speed Of Light Light moves quickly in a denser medium.


Phenomena Counter-Arguments

Rectilinear No counter arguments.
Propagation

Reflection No counter arguments.

Refraction Speed of light in water is less than speed of light in air.

Dispersion All particles have the same mass.

Diffraction Grimaldi showed that a beam of light passing through a two
successive narrow slits produced on a screen a band of light slightly
larger than the width of the slits.

Partial Reflection/ How does a particle know about what is a good "fit"?
Refraction

Speed Of Light The opposite is that light moves slower in a denser medium.


So, that's the yellow sheet. We also got a worksheet that is due on Monday it's called: Contributions to the determination of the speed of light. Read pages 8-11 and choose one of the contributors to the determination of the speed of light and fill in the sheet making sure to include interesting facts.

So, that is Thursday and Friday. Hope everyone had a wonderful Halloween. See you all Monday. For Monday's scribe I choose Nicole :). Have a wonderful rest of the weekend.