Conservation: Protecting Our Resources (Part 2)

What You'll Learn

Conservation efforts protect natural resources and biodiversity. Reducing waste, recycling, protecting habitats, and using renewable energy all help preserve Earth's resources.

Key Words

conclusion
evidence
model

Materials Needed

markers
popsicle sticks
pennies

Safety First

Clean up spills immediately to prevent slipping.
Use materials only as directed in the experiment.

Steps

Step 1 — Read

Review the background information on Data and Evidence before starting.

Step 2 — Do

Design and build a bridge from newspaper and tape that can hold a textbook. Test it and redesign to make it stronger.

Step 3 — Observe

Watch carefully for any changes and note the time.

Step 4 — Record

Create a data table to organize your measurements.

Check Your Understanding

Question 1

1 of 3

What is the independent variable?