8

Lesson 8 of 84 ยท Engineering and Design

Experimentโญ 30 XP๐Ÿ› ๏ธ Engineer Shop

Types of Waves: Transverse and Longitudinal

๐ŸงชLab Brief #8

Engineering and Design.

๐ŸŽฏ Your mission

Run the experiment. Find out what really happens.

โšก The twist

Constraints make you more creative, not less.

๐Ÿคฏ

Mind = Blown

๐ŸŒ‰ The Eiffel Tower can grow 6 inches taller in summer because metal expands when hot.

๐Ÿ”ฎ

Make a hypothesis first

Before you test: how many tries until it works?

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

  • observation
  • conclusion
  • evidence

Materials Needed

  • scissors
  • straws
  • paper clips
  • rubber bands

Safety First

  • Tie back long hair before starting the experiment.

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

Every bridge, building, and gadget you've ever used started with this.

๐Ÿ†

Stretch Challenge

Try this in real life this week.

Find something that's broken at home and try to figure out *why* it broke.

๐Ÿ‘จโ€๐Ÿ‘ฉโ€๐Ÿ‘ง

For the dinner table

โ€œWhat's something around the house you'd redesign โ€” and how?โ€

๐ŸŽฏ

Next Smart Experiment

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

๐ŸชจShare 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 Engineering and Design for 4th Grade

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