Water Filter

What is the problem you needed to solve for this project?

• We needed to build a boat that can float.

• We needed to build a farm to feed hungry people.

• We needed to build a water filtration system that can clean water.

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-4

What must a water filtration system be able to do?

• It must make water dirty.

• It must make dirty water turn into clean water.

• It must let dirt pass through pebbles.

How much dirty water did we use to test our filters?

• 250ml

• 350 ml

• 400 ml

• 450ml

In which ways did we compare and contrast how filters were built in class? Choose all answers that are correct.

• how much of each material

• number of layers

• order of layer

• the kind of material chosen

• how pretty they looked

Tags

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

In which ways did we compare and contrast the results of filters after we tested them? Choose the correct answers.

• the time each filter started to drip first

• how long it took to drip

• the color of the water

• the taste of the water

• the texture of the water (what things were floating in it)

Tags

NGSS.MS-ETS1-3

In order to remove smaller particles from the water, what kind of filter would you use?

• A filter with larger holes so that the polluted particles won’t go through the filter.

• A cotton filter

• A filter with smaller holes so that the polluted particles won’t go through the filter.

• A screen filter

Tags

NGSS.MS-ETS1-2

Which filter worked the best when filtering tea water? Explain why this filter worked better.

• The screen filter worked the best because it was able to absorb big leaves.

• The paper filter worked the best because it was able to absorb and catch the tea leaves while allowing the water to filter through the paper.

• The sand and gravel worked the best because it was able to let the water seep through.

You are trying to remove small particles from water.  What would be the BEST thing you could do to remove the small particles?

• use a filter material with smaller holes

• clean the water with soap

• use a filter material that is softer

• it is not possible to remove the small particles

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

What is the best way to purify water?

• Add salt

• Put inside the refrigerator

• Filtration or Boiling

• Find a very clean stream of water

Used to separate suspended particles from a liquid

• Filtration

• Distillation

• Crystallisation

• Evaporation