Via Afrika
Physical Sciences
Grade 10 Study Guide
D.B. Gibbon, R. Jones, J.E. Patrick, M. Patrick, S.T. Townsend,
T. van Niekerk, T.E. Luvhimbi, N.P. Mlobeli
,D.B. Gibbon • R. Jones • J.E. Patrick • M. Patrick • S.T. Townsend • T. van Niekerk
Stu dy Guide
Via Afrika
Physical Science
Grade 10
,Contents
Revision.............................................................................................................. 3
How to use this study guide.................................................................................. 5
Topic 1 Matter and materials.............................................................................. 7
Overview............................................................................................................ 7
Questions..........................................................................................................18
Answers to questions..........................................................................................25
Topic 2 Waves, sound and light........................................................................ 29
Overview.......................................................................................................... 29
Questions..........................................................................................................35
Answers to questions......................................................................................... 46
Topic 3 Magnetism and electricity......................................................................53
Overview...........................................................................................................53
Questions......................................................................................................... 62
Answers to questions..........................................................................................72
Topic 4 Chemical change...................................................................................79
Overview...........................................................................................................79
Questions......................................................................................................... 85
Answers to questions..........................................................................................91
Topic 5 Mechanics........................................................................................... 96
Overview.......................................................................................................... 96
Questions........................................................................................................106
Answers to questions........................................................................................ 116
Topic 6 Chemical systems...............................................................................126
Overview.........................................................................................................126
Questions........................................................................................................128
Answers to questions........................................................................................130
Exam Paper 1.................................................................................................... 132
Answers to Exam Paper 1................................................................................... 141
Exam Paper 2.................................................................................................... 147
Answers to Exam Paper 2................................................................................... 153
©Publisher » Subject name
, Physical Science Grade 10 Study Guide
Revision
When revising, many people find it helpful to write as they work. You are more likely to
remember something that you have written than something that you have just looked at
in a book. You will also find that you can concentrate better and learn faster if you revise
hard for a few short sessions rather than for one long one. You will find that you get
more revision done in three half-hour sessions with five minute breaks in-between than
in one session of 1½ hours. When you take a break, do something completely different –
preferably physical. Go for a walk, jump up and down, run around the garden or kick a
ball.
Your memory recall of the work you have learned will be improved immensely if
you go through it at regular intervals. People who have studied memory talk about
the ‘forgetting curve’. Suppose you have done an hour’s revision and have learned a
summary of a topic. The forgetting curve shows that whatever you are going to forget of
that summary, you are likely to forget as much as half of it in the next 24 hours. If you
spend just five minutes quickly going through that same summary the next day, and
another five minutes a few days later, your memory recall at a later date when you write
the exam will be much better.
How to tackle exam questions
Multiple choice questions
You probably will have to answer the questions by filling in blocks on an answer sheet.
Use a pencil to fill in the blocks, so that you can rub it out if you wish to change an
answer. If the examination requires you to use a pen, go over them again at the end
when you are satisfied with your answers.
There will usually be four options to choose from in a multiple choice question. When
you read the question, try to answer it in your mind without looking at the choices, then
see if your answer is one of them. Sometimes the wrong choices can confuse you. There
is always only one correct answer, so never fill in two blocks. If you do that, your answer
will be marked wrong.
You do not lose marks if you get a multiple choice question wrong, so never leave out a
question simply because you are not sure of an answer. Try to eliminate some choices
that you think are definitely wrong, and then guess and hope for the best. Do not go on
to the next question without committing yourself to an answer to the previous question,
© Via Afrika » Physical Science 3
Physical Sciences
Grade 10 Study Guide
D.B. Gibbon, R. Jones, J.E. Patrick, M. Patrick, S.T. Townsend,
T. van Niekerk, T.E. Luvhimbi, N.P. Mlobeli
,D.B. Gibbon • R. Jones • J.E. Patrick • M. Patrick • S.T. Townsend • T. van Niekerk
Stu dy Guide
Via Afrika
Physical Science
Grade 10
,Contents
Revision.............................................................................................................. 3
How to use this study guide.................................................................................. 5
Topic 1 Matter and materials.............................................................................. 7
Overview............................................................................................................ 7
Questions..........................................................................................................18
Answers to questions..........................................................................................25
Topic 2 Waves, sound and light........................................................................ 29
Overview.......................................................................................................... 29
Questions..........................................................................................................35
Answers to questions......................................................................................... 46
Topic 3 Magnetism and electricity......................................................................53
Overview...........................................................................................................53
Questions......................................................................................................... 62
Answers to questions..........................................................................................72
Topic 4 Chemical change...................................................................................79
Overview...........................................................................................................79
Questions......................................................................................................... 85
Answers to questions..........................................................................................91
Topic 5 Mechanics........................................................................................... 96
Overview.......................................................................................................... 96
Questions........................................................................................................106
Answers to questions........................................................................................ 116
Topic 6 Chemical systems...............................................................................126
Overview.........................................................................................................126
Questions........................................................................................................128
Answers to questions........................................................................................130
Exam Paper 1.................................................................................................... 132
Answers to Exam Paper 1................................................................................... 141
Exam Paper 2.................................................................................................... 147
Answers to Exam Paper 2................................................................................... 153
©Publisher » Subject name
, Physical Science Grade 10 Study Guide
Revision
When revising, many people find it helpful to write as they work. You are more likely to
remember something that you have written than something that you have just looked at
in a book. You will also find that you can concentrate better and learn faster if you revise
hard for a few short sessions rather than for one long one. You will find that you get
more revision done in three half-hour sessions with five minute breaks in-between than
in one session of 1½ hours. When you take a break, do something completely different –
preferably physical. Go for a walk, jump up and down, run around the garden or kick a
ball.
Your memory recall of the work you have learned will be improved immensely if
you go through it at regular intervals. People who have studied memory talk about
the ‘forgetting curve’. Suppose you have done an hour’s revision and have learned a
summary of a topic. The forgetting curve shows that whatever you are going to forget of
that summary, you are likely to forget as much as half of it in the next 24 hours. If you
spend just five minutes quickly going through that same summary the next day, and
another five minutes a few days later, your memory recall at a later date when you write
the exam will be much better.
How to tackle exam questions
Multiple choice questions
You probably will have to answer the questions by filling in blocks on an answer sheet.
Use a pencil to fill in the blocks, so that you can rub it out if you wish to change an
answer. If the examination requires you to use a pen, go over them again at the end
when you are satisfied with your answers.
There will usually be four options to choose from in a multiple choice question. When
you read the question, try to answer it in your mind without looking at the choices, then
see if your answer is one of them. Sometimes the wrong choices can confuse you. There
is always only one correct answer, so never fill in two blocks. If you do that, your answer
will be marked wrong.
You do not lose marks if you get a multiple choice question wrong, so never leave out a
question simply because you are not sure of an answer. Try to eliminate some choices
that you think are definitely wrong, and then guess and hope for the best. Do not go on
to the next question without committing yourself to an answer to the previous question,
© Via Afrika » Physical Science 3
