Diffusion
Define diffusion and explore factors that affect the rate of diffusion in the human body.
Diffusion
Define diffusion and explore factors that affect the rate of diffusion in the human body.
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Lesson details
Key learning points
- Define diffusion
- Describe factors that affect diffusion
- Explain examples of diffusion in the human body
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6 Questions
Q1.
Match the state of matter to the correct arrangement of particles.
regular arrangement, all particles touching and in rows
irregular arrangement, all particles touching
irregular arrangement, no particles touching
Q2.
Which gas is taken in through the lungs and used for respiration?
carbon dioxide
water vapour
Q3.
Which piece of equipment is used to measure time?
clock
digital mass balance
Q4.
Substances move in and out of cells through the cell .
Q5.
In which state of matter are particles not free to move?
Q6.
How could a glass of juice be made more dilute?
add more juice
freeze it
6 Questions
Q1.
is the net movement of particles from an area of high concentration to an area of low concentration.
Q2.
Which of these is an example of diffusion?
electricity moving through a wire
heat moving through a metal rod
Q3.
Diffusion happens more quickly at higher temperatures because particles have more energy in their energy store.
Q4.
Match the adaptation of alveoli to the explanation.
increases surface area
short diffusion distance
increases concentration gradient
Q5.
Calculate the surface area to volume ratio of a cube with a side length of 10 cm. Give your answer as a decimal.
Q6.
Which two of the following are leaf adaptations for diffusion?
are green
have folded structure