JSS 1 Intermediate Science Flashcards: Drawing Instruments, Uses and Basic Drawing Practice

Question 1

Which drawing instrument is used to draw horizontal lines on a drawing board: T-square, compass, divider, or protractor?

Accepted Answer

T-square

Question 2

A set square is used with a T-square to draw ____.

Accepted Answer

vertical and inclined lines

Question 3

Which instrument draws circles and arcs: pair of compasses, divider, T-square, or protractor?

Accepted Answer

pair of compasses

Question 4

A divider is mainly used to ____.

Accepted Answer

transfer or compare distances

Question 5

Which instrument measures angles: protractor, compass, ruler, or French curve?

Accepted Answer

protractor

Question 6

A French curve is used to draw ____.

Accepted Answer

smooth irregular curves

Question 7

A ruler is mainly used to ____.

Accepted Answer

measure length and draw straight lines

Question 8

A sharp pencil is preferred for technical drawing because it produces ____.

Accepted Answer

thin, accurate lines

Question 9

Which pencil grade is generally better for light construction lines: a hard pencil, a soft pencil, a coloured pencil, or a carpenter’s pencil?

Accepted Answer

a hard pencil

Question 10

The correct first step before drawing with an instrument is to ____.

Accepted Answer

check that it is clean and in good condition

Question 11

To draw a circle of a given radius, first set the compass opening with a ____.

Accepted Answer

ruler

Question 12

Why should the compass needle remain fixed at the centre while drawing?

Accepted Answer

It keeps the circle centred and accurate.

Question 13

A 90° line to a horizontal baseline can be drawn accurately with a ____.

Accepted Answer

set square and T-square

Question 14

Which instrument is most suitable for constructing a 60° line: a 30°–60° set square, divider, French curve, or T-square alone?

Accepted Answer

a 30°–60° set square

Question 15

After use, a compass should be stored with its sharp point ____.

Accepted Answer

protected

Question 16

Why should drawing instruments not be used as cutting tools?

Accepted Answer

They may be damaged and cause injury.

Question 17

The main reason for keeping a drawing board clean is to ____.

Accepted Answer

prevent dirt and marks from spoiling drawings

Question 18

Which is NOT a correct use of a protractor: drawing circles, measuring angles, marking 45°, or checking a right angle?

Accepted Answer

drawing circles

Question 19

When a line is drawn inaccurately, the best correction is to ____.

Accepted Answer

erase it carefully and redraw it with the proper instrument

Question 20

Basic drawing practice develops the ability to represent objects ____.

Accepted Answer

accurately and clearly

Strong work.