Testing the Waters

Why did the city of Flint, Michigan change its water source?

• to save money

• the lake ran out of water

What element did scientists find in the water?

• Lead (Pb)

• Chlorine (Cl)

• Carbon (C)

• Lithium (Li)

Did local officials tell residents that the water was safe?

• yes

• no

What was wrong with the water from the Flint River?

• the river water was more acidic

• the river water was more basic

• the river water was neutral

• the river water was dirty

What did the Flint River water do to the lead pipes?

• the acidic water ate away at the old lead pipes

• nothing

• the river water had many germs

• the river water made the pipes stronger

What can lead exposure do to brain development?

• causes learning and behavior problems

• slows growth

• causes heart problems

• causes lung problems

What can lead exposure do to bones and muscles?

• causes learning and behavior problems

• slows growth

• causes heart problems

• causes lung problems

What happened when Gitanjali's family tested their water with lead test strips?

• they found lead in their water

• the results were not clear

What are carbon nanotubes?

• microscopic cylinders made of carbon

• microscopic cylinders made of lead

• large cylinders made of carbon

• large cylinders made of lead

What type of model did Gitanjali make for the Young Scientist Challenge?

• cardboard model

• a poster

• a device with nanotube sensors

• a lead model