Gravity and Weight

Lab Brief #1

🎯 Your mission

Predict it first. Then prove yourself right (or wrong).

⚡ The twist

Energy never disappears — it just hides somewhere else.

What you'll learn

Gravity is the force that pulls objects toward each other. On Earth, gravity pulls everything toward the center of the planet, giving objects their weight.

Key words

gravity
A force that pulls things down toward the Earth.
force
A push or pull that can make an object move or stop.

Make a hypothesis first

Before you start: which will move faster, and why?

Say your guess out loud — then find out if you were right.

Get ready

🧰 What you need

weights
spring scale

⚠️ Safety first

Have an adult check your set-up before you start, and tidy everything away afterwards.

Step 1 of 4 · Read

Look at the vocabulary words and write a definition for each in your own words.

Step 2 of 4 · Do

Test friction: pull a weighted box across 4 surfaces (carpet, tile, sandpaper, foil). Use a spring scale to measure the force needed for each.

Step 3 of 4 · Observe

Watch carefully for any changes and note the time.

Step 4 of 4 · Record

Create a data table to organize your measurements.

Question 1 of 3

What is gravity?

How sure are you?😐 maybe

Question 2 of 3

What causes an object to accelerate?

How sure are you?😐 maybe

Question 3 of 3

What does friction do?

How sure are you?😐 maybe

Mind = blown

⚡ Static electricity is the same physics as lightning, just smaller.

Nice work!

You got 0 of 3 right.

Next: Friction Opposes Motion All lessons

🎯

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✨ More to explore

🌍 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 it 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.”

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