Cooling effect of evaporation

When the temperature of matter increases the particles...

• speed up and move closer

• speed up and move farther apart

• slow down and move closer together

• slow down and move farther apart

What process is occurring for the glue to harden eventually?

• filtration

• distillation

• evaporation

• chromatography

Why does evaporation have a cooling effect?

• The liquid insulates the material

• The liquid is a good heat conductor

• The process absorbs heat from the surroundings

• The process gives out heat to the surrounding

When does sweat help to cool you down?

• Sweat form by absorbing water

• When it is coming out your pores

• When it is covering your skin

• When it is evaporating from your skin

What happens when Acetone is poured on your palm ?

• The particles gain energy from acetone and evaporate

• The particles gain energy from the surroundings and evaporate

• The particles gain energy from the palm and evaporate

• The particles gain energy from the Palm or Surroundings and evaporate

Find which of the following can't be included in the list of applications of evaporative cooling. You will find relevant to our daily lives and so we make use of cooling effect of evaporation

• Perspiration is the natural way of cooling our body and maintaining the core temperature

• Cotton clothes are worn in the summer season

• Water vapors condenses to form small liquid droplets on the same surface.

• Earthen pots was used to cool water by our ancestors