Magnification equation year 12

How many microns (µm)
= 1 mm?

• 1,000
• 1,000,000
• 10,000
• 100,000

How many nanometers (nm)
= 1 mm?

• 1,000
• 10,000
• 100,000
• 1,000,000

To calculate magnification we use......

• image size x actual size
• image size ÷ actual size
• actual size ÷ image size

To calculate image size we use.....

• actual size x magnification
• magnification ÷ actual size
• actual size ÷ magnification

To calculate actual size we use.....

• image size ÷ magnification

• image size x magnification

• magnification ÷ image size

If a scale bar measures 32 mm and it states it's length is 100 µm, what is the magnification?

• 320 x
• 3,200 x
• 0.32 x
• 32,000 x

If a bacteria image measures 450 mm and the magnification is 15,000x, what is the actual size of the bacteria?

• 30 µm
• 0.3 µm
• 300 µm
• 3,000 µm

What steps should Burt use follow to calculate the actual size of each bacterial cell?

• Step 1: Calculate the magnification by measuring the scale bar image ÷ actual size

  Step 2: Measure image of bacterial cell ÷ magnification

• Step 1: Calculate the magnification by measuring the scale bar image x actual size

  Step 2: Measure image of bacterial cell ÷ magnification

• Step 1: Measure the image of the bacterial cell

  Step 2: Divide the image size by the scale bar size

• He can't, it is impossible to calculate