30

Lesson 30 of 84 ยท Human Impacts on Earth

Experimentโญ 30 XP๐ŸŒฟ Wild Jungle

Types of Waves: Transverse and Longitudinal (Part 2)

๐ŸงชLab Brief #30

Human Impacts on Earth.

๐ŸŽฏ Your mission

Run the experiment. Find out what really happens.

โšก The twist

Every species solves the same problem differently.

๐Ÿคฏ

Mind = Blown

๐ŸŒณ Trees can talk to each other through underground fungus networks.

๐Ÿ”ฎ

Make a hypothesis first

Before you watch: what do you think it'll do?

What You'll Learn

The electromagnetic spectrum includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays, ordered by increasing frequency and energy.

Key Words

  • conclusion
  • evidence

Materials Needed

  • cups
  • aluminum foil
  • ruler
  • markers
  • popsicle sticks

Safety First

  • Wash hands after handling materials.
  • Be careful with scissors โ€” ask an adult for help if needed.
  • Do not look directly at the sun or bright lights.

Steps

Step 1 โ€” Read

Read the introduction and identify the main idea of this lesson.

Step 2 โ€” Do

Conduct a design challenge: build a car powered only by a balloon. Measure how far it travels and iterate on your design at least twice.

Step 3 โ€” Observe

Observe what happens and describe it in detail.

Step 4 โ€” Record

Record your observations in your science journal with measurements and descriptions.

Check Your Understanding

Question 1

1 of 3

What type of wave is sound?

๐ŸŒ

Where you see this in real life

This is why plants grow toward windows and why scabs form.

๐Ÿ†

Stretch Challenge

Try this in real life this week.

Watch a plant or pet for 5 minutes today and write down what you noticed.

๐Ÿ‘จโ€๐Ÿ‘ฉโ€๐Ÿ‘ง

For the dinner table

โ€œTell me something you noticed about your own body today.โ€

๐ŸŽฏ

Next Smart Experiment

We'll pick an experiment that matches exactly how you're thinking right now.

๐Ÿ’งShare card

Share this experiment

Send it to a parent who's looking for a 10-minute kitchen science win.

๐Ÿ–จ๏ธ

Checkout complete lesson on Human Impacts on Earth for 7th Grade

Get the full Human Impacts on Earth track as a printable PDF โ€” all lessons, worksheets, and answer keys.

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