Book 25, Question 114 · Video
How does a garbage truck squeeze in so much trash?
A garbage truck has a strong hydraulic arm that lifts bins and dumps them into the back. Inside, a big metal plate called a packer blade pushes the trash forward against the wall and squeezes it into a smaller space. Liquid pressure in cylinders gives it great power. Compacting lets the truck carry much more on each trip.
Read the full answer →Watch on YouTubeSee the series on Amazon
What Crafty Clover says in this video
Intro
Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. How does a garbage truck squeeze in so much trash?
The Big Idea
A garbage truck visits your street. It fits trash from hundreds of homes! How does it squeeze in so much?
Lifting Arm
Step one: Lifting Arm. A garbage truck has a strong hydraulic arm that lifts bins and dumps them into the back. Some drivers never have to leave the cab.
Packer Blade
Step two: Packer Blade. Inside, a big metal plate called a packer blade pushes the trash forward against the wall. It squeezes the trash into a smaller space.
Liquid Power
Step three: Liquid Power. Liquid pressure in cylinders gives the blade great power. Compacting lets the truck carry much more on each trip.
A Closer Look
Let's take a closer look! The arm lifts bins. The blade squeezes. Hydraulics push hard. The body holds trash.
Quick Facts
Quick facts! A compactor truck can squeeze trash to a fraction of its original size. Stay back from garbage trucks. Wave to your collector. Fewer trips save fuel.
Think Like a Scientist
Now, think like a scientist! Fill a bag with crumpled paper. Mark how full it is. Press the paper down firmly. Add more paper. How much extra could you fit in?
Outro
A garbage truck squeezes in lots of trash using a hydraulic arm to lift bins and a powerful packer blade that compacts the trash, so it can carry much more each trip. Science is amazing! The world is full of surprises. Keep asking big questions, and keep exploring with me! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!