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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: