H1 p1.1 + 1.2 TTO

• Natuurkunde / Scheikunde
• Middelbare school
• havo, vwo
• Leerjaar 2

CH 1: Light p1 + p2

good luck

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You'll find the points to be earned next to the questions

There are:

•  4   True or False questions
  
• 19  Multiple choice questions
  
• 1    Open question
  
• 6   Worksheet questions
  

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True or False

You can make all the colors of a rainbow with only three colors

1. True
2. False

A color tv uses
red, yellow and blue pixels.

1. True
2. False

Most color blind people can't
separate red from green colors

1. True
2. False

A colored object may appear black under a colored light source

1. True
2. False

Multiple choice

The light from the sun is

1. Orange
2. Red
3. White
4. Yellow

in sunlight you'll see

1. pure red light
2. some spectral colors
3. pure yellow light
4. the whole spectrum

Together all colors emitted
by a light source
are called?

1. Source spectrum
2. Rainbow colors
3. Spectra
4. Color spectrum

The light from
a natrium lamp
is

1. Yellow
2. A mixed color
3. White
4. A pure color

When can you see an object?

1. when it reflects light
2. When the object is under a lamp
3. If it reflects light towards your eye
4. Always

This picture is an example of

1. absorption
2. diffuse reflection
3. a direct light source
4. mirror like reflection

when lookin at a light source
through a spectroscoop you'll see

1. which colors of light are being emitted
2. a full spectrum
3. the absorbed light rays
4. the light from a sodiumlamp

Where is the image formed eventually?

1. Iris
2. Pupil
3. Macula (yellow spot)
4. Brain

In the yellow spot you will find mainly

1. Rods
2. Cones
3. Nerve cells
4. Blood vessels

What is constant in the eye?

1. focus point distance
2. image distance
3. object distance

The cones are insensitive
for which color?

1. Red
2. Yellow
3. Blue
4. Green

Why do you not see any colors
under the moonlight?

1. Rods are not sensitive for colors
2. Cones are not sensitive for colors
3. There is no color in darkness
4. The yellow spot cannot use the moonlight

The Dutch flag sort of resembles the German flag (zwart, rood en geel) while in a particular color of light

Which color needs to shine on the Dutch flag?

1. Blue
2. Yellow
3. Red

What is a natural light source?

1. a lamp
2. the moon
3. a traffic sign
4. Lightning

What causes
a solar eclipse?

1. because the earth moves in between the sun and the moon
2. Because when it is night there is no light
3. because of the clouds
4. because the moon moves in between the earth and the sun

There are 4 light masts

What will happen if the player 

walks in the direction of the blue arrow?

1. The shadow of lamp 1 en 2 will get bigger
2. Nothing happens, all shadows stay the same
3. Every shadow will get bigger
4. Only the shadow of lamp 3 and 4 will get bigger

An object is 24 mm in height.
An image is being formed with a size of 36 cm.

What is the magnification?

1. 0,066
2. 0,66
3. 1,5
4. 15

An object stands 3,4 cm in front of a lens
The image is 3,5 times as big.

What will be the image distance?

1. 0,0097 m
2. 0,12 m
3. 0,97 cm
4. 120 cm

OPEN QUESTION

Rob wants to determine the height of a lamppost on a sunny day.
He does this by sticking a stick with a length of 90 cm straight up
in the ground. The stick's shadow is 60 cm in length.

The lamp post itself cast's a shadow 3 m in length.
Calculate the height of the lamp post

EXPLAIN by DRAWING

make a neat drawing using 

a ruler or geo triangle 

together with a pencil

see your WORKSHEET

Draw & name 

the shadow(s) 

which are formed

underneath the table

see your WORKSHEET

On the ground you can see a very sharp shadow.

What do you have to do?

1. Determine where the lamp must be
   to be able to cast this shadow
   
   
2. Determine the height of the lamp above the ground (knowing that the height of the table is 90 cm).

see your WORKSHEET

There are several shadows next to a round pole. Somewhere there is a lamp responsible for casting these shadows.

1. Ask yourself, is the light source is a pointsource or a big light source 
   
   
2. Determine the location of the lamp by reverse construction of the light rays causing these shadows.

see your WORKSHEET

A plane flies through bright sunlight

1. Draw some rays from the sun hitting the plane
2. Draw the plane's shadow on the ground
   

And no, I am not going to tell you what the position 

of the sun is... just think about what I told you in class

see your WORKSHEET

Use the correct names 

filling out the missing parts

see your WORKSHEET

Poles under the sun

You see a shadow near one of the poles..

The sun is the cause of this shadow. Now draw the shadows near the other two poles and make clear how you got to this answer.

END

Check everything once more 

before handing in your test