Microscopes

Question 1

How much is 1cm in mm?

Answer 1

1cm = 10mm

Question 2

How much is 1mm in µm?

Answer 2

1mm = 1000µm

Question 3

How much is 1µm in nm?

Answer 3

1µm = 1000nm

Question 4

In standard form, how much is 1nm in m?

Answer 4

1nm = 1x10^-9m

Question 5

Differences between light and scanning electron microscopes.

Answer 5

-The best light microscopes can zoom up to 2,000x

-Electron microscopes can zoom up to 2,000,000x

-Light microscopes are relatively cheap

-Electron microscopes are very expensive

-Light microscopes can see in colour

-Electron microscopes cannot see colour

-Light microscopes can be used anywhere

-Electron microscopes can only be used in specific temperatures, pressures and humidities.

Question 6

Label the parts of a microscope

Answer 6

ocular lens (eyepiece)

coarse adjustment

fine adjustment

stage

light source

stage clips

Question 7

Define resolution

Answer 7

Resolution is the ability to distinguish between 2 separate points.

Question 8

Why are microscopes useful?

Answer 8

They allow scientists to understand sub-cellular structures.

Question 9

What is the difference between scanning and transmission electron microscopes?

Answer 9

-Transmission microscopes form 2D images with higher resolution.

-Scanning microscopes form 3D images with lower resolution.