A bus is a big car that carries lots of people to school, work, or home. Some buses can carry more than fifty people at once.

travel_exploreDiscovery · How things work · Things that go

🚗 Things that go

8 short answers for ages 3–6. Start with “Why are wheels round?” or explore the complete set together.

What this set covers

This set has 8 short, child-friendly answers about this topic and is designed for ages 3–6. Every card adds a fact, something small to try and a prompt that keeps the conversation going.

Tap a question to reveal the answer, share the fun fact, try the tiny activity, then talk about it together.

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Card 1/8 schedule2 min · Together Why are wheels round? Revealexpand_more On the flip side 💬 A short, honest answer ⭐ A fun fact for grown-ups 🎲 A tiny 30-second game Flip the cardautorenew

Why are wheels round?

Wheels are round so they can roll smoothly along the ground without bumping. A round wheel touches the ground at just one spot and keeps turning over that spot, which lets it move easily. A square wheel would get stuck on each corner with every turn.

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Talk about itWhat things around you have wheels?

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Did you know?The wheel is one of the oldest and most important inventions people ever made.

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Try itTry rolling a round ball and a square block across the floor. Which one moves easily, and which one gets stuck?

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Still curious?What did people use to move heavy things before wheels?Learn more in the full apparrow_forward

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Card 2/8 schedule2 min · Together What makes a car go? Revealexpand_more On the flip side 💬 A short, honest answer ⭐ A fun fact for grown-ups 🎲 A tiny 30-second game Flip the cardautorenew

What makes a car go?

A car has an engine that burns fuel or uses a battery to make its wheels spin. When the driver presses the pedal, the engine turns the wheels, and the grip of the tyres pushes the car forward along the road. Steering the wheel points the front wheels where you want to go.

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Talk about itWhere is your favourite place to go by car?

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Did you know?The very first cars were so slow that a person could walk faster than they drove.

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Try itPush a toy car and let go. It rolls, then stops. A real car needs an engine to keep going.

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Still curious?How is an electric car different from a petrol one?Learn more in the full apparrow_forward

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Card 3/8 schedule2 min · Together Why do boats float? Revealexpand_more On the flip side 💬 A short, honest answer ⭐ A fun fact for grown-ups 🎲 A tiny 30-second game Flip the cardautorenew

Why do boats float?

A boat floats because it pushes aside a lot of water, and that water pushes back up hard enough to hold the boat. Even heavy boats float if they are shaped to spread out over the water instead of sinking into it. A boat full of air inside floats better than a solid lump.

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Talk about itHave you ever been on a boat? What was it like?

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Did you know?Huge metal ships float even though metal on its own sinks in water.

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Try itPress a flat sponge and a crumpled ball of the same sponge onto water. The flat, spread-out one floats more easily.

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Still curious?How can a heavy metal ship float when a coin sinks?Learn more in the full apparrow_forward

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Card 4/8 schedule2 min · Together How do planes stay up in the sky? Revealexpand_more On the flip side 💬 A short, honest answer ⭐ A fun fact for grown-ups 🎲 A tiny 30-second game Flip the cardautorenew

How do planes stay up in the sky?

A plane has long, smooth wings and powerful engines that push it forward very fast. As air rushes over the specially shaped wings, it lifts the plane up and holds it in the air. As long as the plane keeps moving forward fast enough, the wings keep it flying.

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Talk about itWhere in the world would you fly if you could go anywhere?

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Did you know?The biggest planes are heavier than a hundred cars, yet they still fly.

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Try itHold a strip of paper below your lips and blow across the top. It lifts up, a bit like air lifting a wing.

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Still curious?Why do planes need such long runways?Learn more in the full apparrow_forward

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Card 5/8 schedule1 min · Together Why do car wheels spin? Revealexpand_more On the flip side 💬 A short, honest answer ⭐ A fun fact for grown-ups 🎲 A tiny 30-second game Flip the cardautorenew

Why do car wheels spin?

The car engine makes the wheels spin round and round, and that pushes the car forward.

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Talk about itWhat is your favourite car to ride in?

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Did you know?A car has four wheels, and they all spin together.

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Try itRoll a toy car on the floor and watch its wheels spin.

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Still curious?How do you ride a bike?Learn more in the full apparrow_forward

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Card 6/8 schedule1 min · Together How do you ride a bike? Revealexpand_more On the flip side 💬 A short, honest answer ⭐ A fun fact for grown-ups 🎲 A tiny 30-second game Flip the cardautorenew

How do you ride a bike?

You push the pedals with your feet, and the wheels turn to move you forward.

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Talk about itDo you like riding a bike or a tricycle better?

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Did you know?The faster you pedal, the faster the bike goes.

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Try itPretend to pedal a bike with your feet while sitting down.

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Still curious?Why do car wheels spin?Learn more in the full apparrow_forward

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Card 7/8 schedule1 min · Together What does a bus do? Revealexpand_more On the flip side 💬 A short, honest answer ⭐ A fun fact for grown-ups 🎲 A tiny 30-second game Flip the cardautorenew

What does a bus do?

A bus is a big car that carries lots of people to school, work, or home.

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Talk about itHave you ever ridden on a bus? What was it like?

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Did you know?Some buses can carry more than fifty people at once.

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Try itLine up your toys like seats on a bus and give them a ride.

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Still curious?How do you ride a bike?Learn more in the full apparrow_forward

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Card 8/8 schedule1 min · Together Why is the plane so high up? Revealexpand_more On the flip side 💬 A short, honest answer ⭐ A fun fact for grown-ups 🎲 A tiny 30-second game Flip the cardautorenew

Why is the plane so high up?

A plane flies way up in the sky, above the clouds, so it does not bump into anything.

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Talk about itWhere would you like to fly to on a plane?

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Did you know?From way up high, cars on the road look as tiny as ants.

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Try itLook up at the sky and see if you can spot a plane or its trail.

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Still curious?What does a bus do?Learn more in the full apparrow_forward

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When the questions run out, a story

Gentle stories where your child is the hero and Grow the friend.

All stories →

Sleep▶ 4 min

Sources

Answers are simplified for young children and checked against child-friendly science references.

🚗 Things that go

What this set covers

Questions in this set

More topics

When the questions run out, a story

Grow and the Stars

Grow and the Magic Bridge

Grow and the Cloud Full of Feelings

Grow Gets Everything Wrong

Grow and the Garden Mystery

Grow and the Whispering Night

Grow and the Dry Night Map

Grow and the Cozy Thumb

Grow and the Borrowed Little Truck

Grow and the Curious Little Bear

Sources