Science P3 | Emman's Guide

Question 1

TURNING FORCES: I understand that the forces can cause turning effects.

Answer 1

The causes are simple; you can have a turning effect of a force by the movement of a pivot, causing the lever to also move.

Question 2

TURNING FORCES: I understand what is ment by the term moment.

Answer 2

Moment is the turning effect of a force.

Question 3

TURNING FORCES: I know and can use the equation that links moment, force and distance.

Answer 3

Yes.
(moment=forcex distance)
(N=Nxm)

Question 4

TURNING FORCES: I know the unit of moment.

Answer 4

Nm

Question 5

REFLECTION: I can describe how light is reflected from a plane mirror.

Answer 5

Yes, the incident ray bounces of the normal creating a reflection.

Question 6

REFLECTION: I can recall the law of reflection.

Answer 6

i=r

Question 7

REFLECTION: I can draw ray diagrams to show reflection of light from a plane mirror.

Answer 7

CORRECT

Question 8

REFRACTION: I can describe how light changes speed between air and either water of glass.

Answer 8

Yes, the ligh changes speed because of the density of each object.

Question 9

REFRACTION: I can recall that a change in speed can make a light ray change direction.

Answer 9

Yes, since depending of the change, the light ray can bend away or towards the normal.

Question 10

REFRACTION: I can recall which way light changes direction when it passes from air into glass or water.

Answer 10

When light passes through a less dense substance (air) to an more dense substance (glass or water) the light is bend towards the normal.

Question 11

REFRACTION: I can recall which way light changes direction when it passes from glass or water into air.

Answer 11

When light passes though a dense substance (glass or water) into a less dense substance (air), the light is bend away the normal.

Question 12

DISPERSION: I can recall that white light is made from different colours of light.

Answer 12

Yes, white light is made from 7 different colors.
Red has the smallest angle.
Violet has the biggest angle.

Question 13

DISPERSION: I can describe how to use a prism to produce dispersion of white light.

Answer 13

Yes, by the refraction the colors disperse.

Question 14

DISPERSION: I can list the seven colours in order, starting from red.

Answer 14

ROY G BIV
Red, Orange, Yellow, Green, Blue, indigo and Violet.

Question 15

COLOURS: I can recall the three primary colours of light.

Answer 15

Blue
Red
Green

Question 16

COLOURS: I can recall the colours that are made when these primary colours are added together.

Answer 16

Cyan, Magenta, Yellow and White.

Question 17

COLOURS: I understand that filters work by subtracting light.

Answer 17

Yes…
A little bit.
When putting on a filter on light of a certain color, only that color while pass through and the others get absorbed (substracted).

Question 18

COLOURS: I can predict what will happen when light of different colours shines on filters of different colours.

Answer 18

For what I understand, the primary colors OBJECTS will look black when put on other color light (not only primary color of light).

Question 19

COLOURS: I understand why coloured objects appear coloured whenseen in white light.

Answer 19

White ligt is composed of the colors of that object, so the object then will let get through the color the object is composed and absorbed others. (substract others).

Question 20

COLOURS: I can predict the colours that objects will appear to be, when seen in light of different colours.

Answer 20

Yes,
I think.

Question 21

TURNING FORCES QUESTION I GOT WRONG: In wich direction does a moment act?

Answer 21

Perpendicular to the applied force.

Question 22

REFRACTION QUESTION I GOT WRONG: Between which two substances would there be MOST refraction

Answer 22

Air and Diamond