Water Cycle & Its Applications

In the experiment for lesson 7, the independent variable is

• the type materials used to cover the containers

• amount of hot water

• the type of containers

• the location of set-ups

What is found forming on the sides of the containers?

• water vapour

• water droplets

• water

• mist

The purpose of adding ice cubes to the cover is to

• increase the temperature of the water vapour and the surface

• decrease the temperature difference between the water vapour and the surface

• increase the temperature difference between the water vapour and the surface

• produce more water droplets

Why is it important to keep all the parts of the set-up the same except for the materials used?

To ensure a _________________ and the [DV] _______________ is ​__________ caused by /due to [IV] ​_________________ and not ​ __________________.​

Why is it important to keep the thickness and size of the containers the same?

The ____________ and ___________ of containers affects the rate of heat ​____________ from the ​___________ to the ​____________. This further affects the temperature ​_____________ between the water vapour and the underside of the material, which affects the rate of ​_______________ and the amount of _________________ formed.

Which one of the following is the correct aim beginnings of experiments with two set-ups?

• To find out which

• To see

• To find out how

• To find out if

Which one of the following is the correct aim beginnings of experiments with three or more set-ups or sets of readings?

• To find out which

• To see

• To find out how

• To find out if

What are some of the ways to speed up the formation of water droplets?

• Increase the amount of hot water

• Use a container with thin wall

• Use more ice

• Put the set-ups in a cool place

The melting point of a substance is the __________________________ at which the solid state ________________ enough heat to change into its ______________ state.

The ________________________ of a substance is the temperature at which the liquid state _________________ enough heat to change into its _________________ state.