Portable water purification

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/portable-water-purification

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. How big is Portable water purification?Outdoor recreation, disaster relief, military operations, developing countries, and emergency preparedness
2. What is the scientific principle (UV)?Germicidal UV light damages microbial DNA/RNA, preventing reproduction
3. What is a portable water purifier?It is a small device that cleans dirty water from rivers, lakes, or wells so it can be safely drank.
4. How does a portable water purifier remove germs?It uses filters or chemicals like chlorine to kill bacteria, viruses, and protozoa that can make you sick.

Pathogen: A microorganism, such as a bacterium or virus, that can cause disease.
Point-of-Use (POU) System: A water treatment device that purifies water at the location where it is needed.
Turbidity: The cloudiness or haziness of a fluid caused by large numbers of individual particles.
Membrane Filtration: A process that uses semi-permeable membranes to separate contaminants from water based on size.