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Humans at Work Questions 844 001
P
8.4.4.
Section 4
2-3
Marks
1
Marks
1
A sensory-neural hearing loss is associated with
A. The eardrum
B. The Ossicles
C. The Vena Cava
D. The Auditory nerve
844 002
P
8.4.4.
2-3
Which choice correctly matches the structure of the ear to its function?
Structure
Function
A
Hair cells
Transmits vibrations to ossicles
B
Ossicles
Magnifies vibrations and transmits them to inner ear
C
Auditory canal
Detect vibrations and transfer information to auditory nerve
D
Eardrum
Channels sound to the eardrum
844 003
P
8.4.4.
2-3
Marks
1
Marks
1
A sensory-neural hearing loss is associated with
A. The eardrum
B. The ear canal
C.
844 004
P
8.4.4.
2-3
Outline the structure of materials that allows them to absorb sound [2 marks]
844 005
P
8.4.4.
Describe industrial deafness
844 006
P9
8.4.4.a
2-3
Marks
1
Marks
1
[3 marks]
2-3
Which of the following correctly matches a structure in the ear with its function?
Structure
Function
A
Auditory
Nerve
Transmits sound vibrations to the brain
B
Pinna
Transmits sound vibrations to the eardrum
C
Cochlea
Involved in the sensing of sound vibrations
D
Ossicles
Transmits sound vibrations to the Auditory canal (from
eardrum)
Answer
844 007
C
P9
8.4.4.c
2-3
Marks
1
What is a good definition of sensory fatigue?
A. Tired (fatigued) hearing caused by constant exposure to loud noises
B. Sensory fatigue occurs when constant fatigue due to constant exposure to loud
sounds results in permanent damage to the hair cells in the cochlea.
C. Sensory fatigue occurs when the ossicles can no longer respond properly to sound
vibrations and therefore transmission of vibrations is reduced
D. Sensory fatigue occurs when the hairs responsible for the detection of sound waves
in the cochlea become fatigued and can no longer respond with the same degree of
movement.
Answer
844 008
D
P
8.4.4.c
2-3
Which part of the ear is associated with industrial deafness?
844 009
P
8.4.4.c
2-5
Marks
1
[1 mark]
Marks
8
The method below was used to investigate if a noisy environment reduced the amount of
learning that occurred.
Method
A. Give Student A 10 points to study from the topic Humans at Work – Sect 3.
B. Give Student B 10 points to study from the topic Humans at Work – Sect 4.
C. Each student is given four minutes to study the 10 points.
D. Each student has a pair of earphones on, that blocks out all sound.
E. Student A can hear an annoying song while studying.
F. Student B can hear nothing and can concentrate on the music.
G. A 20 question test is given to each student based on both study sheets.
a.
b.
c.
d.
e.
f.
Write an aim for this investigation.
[1 mark]
Name the independent variable.
[1 mark]
Name two controlled variables in this investigation
[1 mark]
Identify one good feature of this investigation
[1 mark]
Identify three problems with this investigation
[2 marks]
Do these problems make the results valid or invalid. Explain clearly
marks]
Marking Criteria Part e
Identifies three problems
Identifies two problems
Marking Criteria Part f
Identifies that the results are invalid and links this to a significant reason
concerned with experimental design
Outlines a problem that causes the investigation to be invalid (no explanation)
[2
Marks
2
1
Marks
2
1
Sample Answer
a. To investigate if learning in a noisy environment reduces learning
b. Noise level
c. Same amount of time to study; Both students sit the same test
d. The experiment has a control and experimental group
e. Not enough subjects (only 2 students); We don’t know if the two topics are equally
difficult; The test is not fair (neither student studied all the facts for the test); We don’t
know if each student has similar ability; many others
f. The results would be invalid because there are not enough results. There are only two
results being compared. The difference in performance could be due to an unusual
event – not due to the independent variable.