The communication of ideas is an important part of our everyday
lives. One of the ways that scientists communicate is to use drawings.
It is important to make a scientific drawing clear, neat, and accurate.
What To Do
Scientific Drawing of an Earthworm
- Use unlined paper and a sharp pencil. You will also need a
ruler and make sure you use a good quality eraser to make your
- Give yourself plenty of space. Your diagram should be at least
1/2 page in size. Even if you earthworm is small, you still want
to have the space to add labels and captions to your drawing.
- Labels identify the parts of the object you are drawing. Place
labels on the right your drawing unless putting them all on the
one side would make your drawing cluttered. Use your ruler to
draw lines to the different structures. Make sure none of your
label lines cross.
- Draw only what you see and keep your drawing simple.
- Shading or colouring is not usually found on scientific drawings.
If you want to indicate a darker area, you can use stippling (a
series of dots).
- If you do use colours, try to be as accurate as you can. Choose
ones that are as close as possible to the colour of the earthworm.
The only bright blue worms you see are the candy ones found in
- Label the different structures carefully. Go back to the Key
Terms in the investigation if you are not sure how to spell the
names of the different structures.
- Give your drawing a title. You can also include the scale of
your drawing. Is the drawing of your earthworm twice as big as
the real worm? Or is it the actual size of the earthworm -- the
person looking at your diagram needs to know.
(20 times actual size)