Lesson 79 of 84 · Forces

Lesson⭐ 30 XP⚡ Spark Lab

Speed and Direction (Part 3)

🧪Lab Brief #79

Speed and Direction (Part 3).

🎯 Your mission

Master the concept. Use it tomorrow.

⚡ The twist

The opposite of what you expect is often what happens.

🤯

Mind = Blown

🔥 A bolt of lightning is 5 times hotter than the surface of the sun.

🔮

Make a hypothesis first

Predict: what happens if you double the force?

What You'll Learn

A lever is a simple machine. A seesaw is a lever—push down on one end and the other goes up!

Key Words

pulley
wheel

Steps

Step 1 — Read

Look at the picture and read the labels.

Step 2 — Do

Drop a feather and a coin at the same time from the same height. Which hits the ground first?

Step 3 — Observe

Draw a picture of what you observe.

Step 4 — Record

Share your results with a partner.

Check Your Understanding

Question 1

1 of 3

How can you make something move?

How sure are you going to be?😐 maybe

🌍

Where you see this in real life

You use this every time you flip a light switch, ride a bike, or kick a ball.

🏆

Stretch Challenge

Try this in real life this week.

Time how long a small ball rolls down something, then change the slope and try again.

👨‍👩‍👧

For the dinner table

“Show me something at home that uses this kind of energy.”

🎯

Next Smart Experiment

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

🌍Share card

Share this experiment

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

🖨️

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