|
|
| Questions
(Page 296) |
|
|
2 |
The
cursor or turtle does not end up in the same place it started
from and it also points in a different direction. |
|
|
3 |
For
a triangle like this, we could use the following program;
FORWARD 50
RIGHT 120
FORWARD 50
RIGHT 120
FORWARD 50 |
|
|
 |
| Things
To Do (page 297) |
|
1(a)
|
|
This
draws a 5 X 5 square.
 |
|
(b)
|
|
REPEAT
2 [FORWARD 4 RIGHT 90 FORWARD 6 RIGHT 90] (n.b. Instructions
in the bracket could be the other way round i.e. FORWARD 6 etc).
|
|
|
|
|
|
2(a)
|
|
INPUT
Column_number INPUT Row_number FORWARD Row_number TURN RIGHT
FORWARD Column_number TAKE |
|
(b)
|
|
Reactors
give off radiation which is very dangerous to humans. |
|
|
|
|
|
3(a)
|
|
Traces
a square of side 10 units.
 |
|
(b)
|
|
FORWARD
15 RIGHT 120 FORWARD 15 RIGHT 120 FORWARD 15 |
|
(c)
|
|
REPEAT
6 TIMES FORWARD 10 RIGHT 60 AGAIN |
|
|
|
|
|
4
|
|
FORWARD 100 LEFT 90 FORWARD 50 LEFT 90 FORWARD 100 RIGHT 90
FORWARD 50 RIGHT 90 FORWARD 100 RIGHT 90 (or could be LEFT 90)
|
|
|
|
 |
| Examination
Questions (page 355) |
|
1
|
|
There
are many ways of doing this and this is only one method:
PEN DOWN
FORWARD 50
RIGHT 90
FORWARD 25
PEN UP
FORWARD 50
PEN DOWN
FORWARD 25
RIGHT 90
FORWARD 50
RIGHT 90
FORWARD 100 |
|
|
|
|
|
2(a)
|
|
One
from: Police, Ambulance, Fire brigade, driving instructor etc. |
|
(b)
|
|
Any two such as:
Lives are not put in danger or risk.
It is cheaper because cars are not damaged.
Can control the conditions of the drive.
Can control the location of the drive. |
|
(c)
|
|
|
|
(d)
|
|
Two
such as:
Flight simulation used to train pilots to fly planes.
Used by economists to predict what will happen in certain situations
(e.g. the affect of interest rate increases). |
|
|
|
|
|
