The document discusses microscope safety levels and calculating magnification. It explains that level 3 safety involves using simple equipment correctly, while level 4 means using equipment safely. It also provides instructions for calculating magnification by multiplying the lens magnification by 10, and gives an example of a 40x lens yielding 400x magnification. The document appears to include images and descriptions of onion cells at different magnifications.
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Onion cell practical worksheet
1. Level Safety Achieved
3 I use simple equipment correctly
4 I can use equipment safely
5 What are the risks of this experiment?
6 How can I control these risks?
Magnification is how much bigger the object looks. To work it out multiply the magnification on
the lens by 10. e.g. If you are using the x40 lens then the magnification is x400.
This is onion cells at a
magnification of X…………
This is onion cells at a
magnification of X…………
This is
onion
cells at
This is
onion
cells at
Magnification is how much bigger the object looks. To work it out multiply the magnification
on the lens by 10. e.g. If you are using the x40 lens then the magnification is x400.