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Being a Physicist
S2 Homework Gleniffer High School
1
Homework Date
due
Parent/Guardian
Signature Mark
1 – What is a Wave /10
2- Sounds on the
Move /14
3- Sounds you cannot
hear /13
4- Sound Engineering /7
5- The EM Spectrum /12
6- What is heat?/Can
heat flow? /10
7- Conduction /10
8- Cooling down /8
9- Convection in
fluids /6
10- Radiation /10
11- Heat loss in the
home /14
12- Reflection /8
13- Refraction /10
14- Sight and sight
defects /15
2
Homework 1
Lesson1 – What is a Wave?
Fill in the blanks
All waves transfer _________
Two examples of waves are:
o ___________________
o ___________________
The ________ of a wave shows how much _____ is in
a wave.
Describe an experiment to measure the energy in a water
wave.
1
1
1
1
2
4
Find out more....
Total:
Grade:
3
Homework 2
Lessons 2+3 Sounds on the Move
Fill in the blanks
Sounds travel by _____________
Sounds can travel through ________, ________ and
________ but not through a ________ because there
are no ________.
Describe and experiment to prove that sound can travel
through liquids.
Explain how a ‘cup-and-string’ telephone works
1
5
4
4
Total:
Grade:
Find out more....
4
Homework 3
Lesson 4 Sounds you cannot hear
Fill in the blanks
The _________ of a sound is a measure of how many
times an object vibrates per second.
The units used to measure frequency are called _____.
Sounds above the human range of hearing are known as
_________. They can be used to see_______
_______ in the womb or to find objects under the
_______.
Find out how: (a) navigate in the dark
(b) elephants communicate over large
distances
Find out more....
1
1
4
4
5
Total:
Grade:
6
Homework 4
Lesson 5 Sound Engineering
Fill in the blanks
An _________ can be used to increase the ______of a
sound.
The following traces are produced when four different
notes are played on a keyboard:
(a) (i) Which trace shows a load, low frequency note?
____
(ii) Which trace shows a quiet, high frequency note?
____
(b) What is the normal frequency range of human hearing?
_______________________________
Find out more....
2
1
1
1
7
Total:
Grade:
8
Homework 5
Lesson 6 The Electromagnetic Spectrum
Fill in the blanks
All waves in the electromagnetic spectrum travel at
the same ______. This is _______________ meters
per second.
Explain why you can see a firework exploding before you
hear it exploding?
Fill in the blanks
Find out more....
2
1
2
3
9
4
Total:
Grade:
10
Homework 6
Lessons 7+8 What is heat?/
Can heat flow?
Fill in the blanks
Heat is a form of ________.
_____________ is a measure of how hot or cold
something is and is measured with a __________.
Heat can travel easily through _________ but not
through __________.
Metals are generally ______ conductors of heat.
_________ and __________ are both insulators.
Explain why cooking pots are often made of metal, but their
handles are often made of plastic.
Find out more....
1
2
2
1
2
2
Total:
Grade:
11
Homework 7
Lessons 9+10 Conduction
Fill in the blanks
Heat energy travels from _______objects to
_________objects.
Heat can travel through solids by _______________
Heat travels by conduction because the touching
particles _____________
Metals are _________conductors of heat and non-
metals are ________conductors (i.e. ____________).
A chef wants to find out which type of cooking is best at
conducting heat– stainless steel or copper-bottomed pots.
Design an experiment to find out which metal is a better
conductor.
Find out more....
2
1
1
3
3
Total:
Grade:
12
Homework 8
Lesson 11 Cooling down
The graph below shows how most substances cool
after being taken away from the source of heat.
Answer the following questions
1. In the graph:
a. Where is the heat loss the greatest: A, B, C or D? ___
b. What is the temperature at point C? ___
2. What is room temperature? ___
3. What is happening at points A, B and C?______________
4. On the same graph, add two cooling lines with the following
characteristics:
a. same starting temperature, higher room temperature
b. higher starting temperature, lower room temperature
Find out more....
120-
105-
90-
75-
60-
45-
30-
15-
0v
time
Temp.
°C
A
B
C D
3
1
1
1
1
1
Total:
Grade:
13
Homework 9
Lessons 12+13 Convection in fluids
Fill in the blanks
In a fluid, (liquid or gas), heat travels mostly
by________________.
In convection, hot fluid ____________
In the diagram below, use arrows to show a convection
current.
Explain why in hot water, do the particles rise ?
Find out more....
1
1
2
2
Total:
Grade:
14
Homework 10
Lessons 14+15 Radiation
Fill in the blanks
A lid reduces heat loss by ________________
All hot objects emit heat as rays called
_____________radiation.
Infra-red radiation can travel without____________
being present.
Infra-red radiation travels very ___________
_____________ and _______________surfaces are
good at giving out and absorbing infra-red radiation
____________ and ______________surfaces make
poor emitters and absorbers of infra-red radiation
Explain why cars and buildings in hot countries are often
painted white
Find out more....
1
1
1
1
2
2
2
2
Total:
Grade:
15
Homework 11
Lessons 16+17 Heat loss in the home
The diagram below shows some ways in which heat is lost in
the home and also what can be done to reduce heat loss.
The table below shows how long it takes for each of these
energy saving features to pay for the cost of installing
them.
Energy saving feature Time to pay for itself
Solar panels 12 years
Double glazing 10 years
Shutters 8 years
Conservatory 15 years
Cavity wall insulation 5 years
Loft insulation 3 years
Find out more....
solar panels
painted matt
black
shutters to
close at night
Conservatory
facing south
loft floor
covered in
glass fibre
containing air
double glazed
window
Cavity walls
filled with foam
containing air
bubbles
16
You may need to do some research to help you with this
homework
1. Explain how the neergy saving features listed below help to save
heat energy:
a. Conservatory facing south
_________________________________________________
_________________________________________________
b. Solar panels painted matt black
_________________________________________________
_________________________________________________
c. Loft floor covered in glass fibre containing air
_________________________________________________
_________________________________________________
d. Double glazed windows
_________________________________________________
_________________________________________________
e. Cavity walls filled with foam containg air bubbles
_________________________________________________
_________________________________________________
2. Use the table on the previous page to help you answer the
following questions
a. Which energy saving feature is the most cost effective?
_________________________________________
b. Which energy saving feature is the least cost effective?
_________________________________________
c. Which feature relies on a renewable form of energy?
_________________________________________
d. Which feature might be the most useful near an airport?
_________________________________________
2
2
2
2
2
1
1
1
1
Total:
Grade:
17
Homework 12
Lessons 18 Light and Reflection
Fill in the blanks
Light is a _______
Complete the diagrams below
Find out more....
1
2
1
1
18
2
1
Total:
Grade:
19
Homework 13
Lessons 19 Refraction
Fill in the blanks
Refraction is: _____________________________
_____________________________
Describe the effect of white light passing through a
triangular prism
Find out more....
2
1
2
20
1
2
2
Total:
Grade:
21
Homework 14
Lessons 20+21 Sight and Sight defects
Fill in the blanks
In normal sight, light enters the eye through the ______
and is the focussed on to the _________ by the
______.
The ______ changes size depending on the amount of
_______ entering the eye.
The _______ protects the eye.
Complete the diagram below for normal sight
Label the following: cornea, iris, pupil, lens, retina, optic
nerve
Find out more....
3
2
1
2
3
22
1
1
2
2
Total:
Grade:
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