Yr 7 Sci - Water Filtration & pH

Using Gravel as a material in your water filtration tube

• Traps medium sized impurities. E.g. sludge, small insects, seeds

• Traps large impurities. E.g. sand, large insects, leaves

• Traps small impurities. It is great because it is so porous.

• Traps mice with cottage cheese

What is the pH of a neutral solution?

• 6

• 2

• 7

• 11

Which of the following is NOT a separation technique

• Evaporation

• Filtration

• Photosynthesis

• Distillation

Using a scourer as a material in your water filtration tube

• Traps chemical contaminants E.g. oil, dye, toxic salts

• Traps soil well

• doesn't do anything

• Traps small impurities. It is great because it is so porous.

Using Paper Towel in as a material in your water filtration tube

• Traps chemical contaminants E.g. oil, dye, toxic salts

• Traps large & small impurities but allows clean water can pass through

• is great because it is so porous.

• Keeps your other layers from falling into the water. Acts like a plug

Using Cotton as a material in your water filtration tube

• Keeps your other layers from falling into the water. Acts like a plug

• Traps all sized impurities.

• Traps soil well

• Traps chemical contaminants E.g. oil, dye, toxic salts

Flow rate is important because

• a poor flow rate is inefficient

• it's all about the ~ flowww~

• it makes the water cleaner

• it calculates water recovery

Lux is a way of measuring light intensity

• True

• False

Which of the follow is false

• Cleaner water will have a high lux reading

• Lux can be used to measure water clarity

• Dirty water will have a low lux reading

• Lux is a measure of light and cannot be used to measure water clarity

Filtration involves a Bunsen burner

• True

• False