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Science Eight Chapter Six
Test Description: Science 8 Chapter 6
Instructions: Answer all questions to get your test result.
1) Which of the following is referred to when we speak about the colour of someone's eyes?
A
sclera
B
pupil
C
iris
D
retina
2) Which of the following is the white part of the eye?
A
cornea
B
iris
C
sclera
D
pupil
3) Which of the following is true?
A
the pupil is larger in dim light
B
the pupil never changes in size
C
the pupil is smaller in dim light
D
the pupil is larger in bright light
4) What does the term 'focus' mean?
A
to make the image look larger than the real size
B
to make light strike a boundary between two materials causing it to reflect
C
to absorb light and record a tiny part of the whole image
D
to make a clear image by adjusting the distance between the screen and the lens
5) What does a microscope use to magnify objects?
A
one convex lens
B
two concave lenses
C
two convex lenses
D
a convex lens and a concave lens
6) Which of the following is FALSE about optical fibres
A
are opaque glass fibres
B
make use of total internal reflection
C
used in telecommunications and in medicine
D
can transmit laser light
7) Which of the following is FALSE about laser light?
A
carries a small amount of energy
B
used in surgery
C
has all the crests and troughs lined up
D
just one wavelength
8) The Hubble telescope is an example of a ____________ telescope
A
multiple mirror
B
reflecting
C
really big
D
refracting
9) Lizzy cannot see far-away objects clearly; she has
A
astigmatism
B
near-sightedness
C
far-sightedness
D
blindness
10) To fix astigmatism
A
the light rays need to be focussed on the iris better
B
the light rays need to be focussed on the pupil better
C
the light rays need to be re-focussed using lenses
D
the light rays need to be broken up
*select an answer for all questions
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