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YR2_T1_LSN14
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Kwizl
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Slide 1:
Slide
Science
Middelbare school
havo, vwo
Leerjaar 2
This lesson contains
23 slides
, with
interactive quizzes
,
text slides
and
2 videos
.
Lesson duration is:
45 min
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Items in this lesson
Get ready:
Macbook:
Google Classroom
Lessonup
Kwizl
Textbook & Notebook closed.
Slide 1 - Slide
YR2_T1_LSN14
Topic 1.5
Slide 2 - Slide
Practice quiz on Kwizl:
8 min max practice quiz.
7 min max peer review and feedback.
5 min max write a reflection in your notebook:
What mistakes did I make?
Why were they mistakes?
What can I do better next time?
timer
20:00
Slide 3 - Slide
Homework check:
Open the docs on Classroom
Correct your hw in a different colour.
Bring up your textbook and notebook when your name is called.
timer
15:00
Slide 4 - Slide
HOW DID THE HW GO?
GREAT
GOOD
OKAY
NOT GREAT
Slide 5 - Poll
Topic 1.5 - Learning Goals:
I can…
Read a sound wave diagram and determine wavelength and amplitude
Calculate the frequency of a sound based on the wavelength
Label the parts of the ear and explain their function
Explain how the brain receives information about the different sound frequencies
Explain how hearing loss can occur as a result of exposure to loud sounds
Slide 6 - Slide
Topic 1.5 - Key Words:
Semicircular canals
Ossicles
Pitch
Auditory nerve
Auricle
volume
Cochlea
Amplitude
Decibels
Eustachian tube
Frequency
Hertz (Hz)
Slide 7 - Slide
1.5 - Sound waves
:
Sound
is a form of energy that travels in
waves
It can only travel when there are molecules to pass on the sound wave
Waves are identified by pitch and by volume
The
pitch
is measured by the number of waves per second in
Hertz (Hz)
The
volume
is measured by the amplitude of the sound wave in
decibels (dB)
Slide 8 - Slide
1.5 - Soundwaves:
Slide 9 - Slide
If a sound gets louder, what changes?
A
frequency
B
wavelength
C
amplitude
Slide 10 - Quiz
If a sound gets higher in pitch, what changes?
A
frequency
B
wavelength
C
amplitude
Slide 11 - Quiz
Slide 12 - Video
1.5 - Frequency:
Frequency
is the number of wavelengths per second (Hz)
Wavelength
: the time of one wavelength is expressed in seconds(s)
Formula:
Slide 13 - Slide
If one cycle(wavelength) is 1 millisecond, what is the frequency?
Slide 14 - Open question
If one cycle(wavelength) is 500 milliseconds?
Slide 15 - Open question
If the frequency is 250 Hz, what is the time of one cycle?
Slide 16 - Open question
1.5 - Ears are the detectors of sound:
Slide 17 - Slide
1.5 - Ears are the detectors of sound:
Vibrations in the air cause the eardrum to vibrate.
This passes on the vibrations to the ossicles.
The ossicles vibrate the cochlea.
This transfers the signals to the auditory nerve.
Slide 18 - Slide
Slide 19 - Video
1.5 - Ultrasound:
Humans can not hear very high pitched sounds
These are called ultrasound
Doctors use ultrasound to check on the health of a baby in the womb
Slide 20 - Slide
1.5 - Sound can be used to locate objects
Bats use sound to locate their prey
Fishing boats use ultrasound to find a school of fish
Slide 21 - Slide
Slide 22 - Open question
Hw for next time:
LABlesson:
Find a lab partner (only pairs!)
Read the required worksheet (magister)
Creat your Labjournal
Study the required glossaries on (Studygo).
Theory lesson: Review lesson!
Complete the hw exercises of Topic 1.5 (p.44-49)
Review your notes of Topic 1.1-1.5
Study the glossaries of Topic 1.1-1.5 on Studygo.
Slide 23 - Slide
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