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level: Topic 1 4: Standard form and order of magnitude

Questions and Answers List

Question	Answer
What is the order of magnitude?	It is size comparison across living organisms
What is 1km to how many m?	1000m
What is 1m to how many mm?	1000mm
What is 1m to how many μm?	1000000μm
What is 1nm to how many μm?	0.001μm
What is 1m in how many cm?	100
What is a 2000000μm to how many cm?	200cm
How big is a mosquito?	4mm
How big is a bacteria cell?	1μm
How big is a small child?	1m
How big is a palisade cell?	70μm
How big is a carbon atom?	0.34nm
How big is red blood cell?	7μm
How big is DNA?	2.5nm
How big is a HIV virus?	120nm
A giant turkey measures 5x10^24 and an easter egg measures 2x10^1m. How many easter eggs can you fit across the diameter of a single giant turkey?	(5 / 2) x 10 (1--24)=2.5x10^25
In a dog, a white blood cell, neutrophil, measures 1.2 x 10^-5 in diameter with a flu virus that measures 1.2 x 10^-7. What is the difference in the order of magnitude?	The neutrophil is 100 times bigger than the virus
If a palisade cell is 7x10^-5, a red blood cell is 7x10^-6, and a bacteria cell was 1x10^-6, what is the difference in order of magnitude?	The difference in order of magnitude between the palisade cell and red blood cell is 1. So, the palisade cell is 10 times bigger than the virus. The red blood cell is also seven times bigger than the bacteria cell.
By how many orders of magnitude is a centimetre larger than a micrometer?	4
How many nm in 1 x 10-6 m?	1000nm