Book 24, Question 90 · Video
Why are mining trucks so huge?
A mine moves millions of tons of rock, so it needs trucks that carry as much as possible in one trip. The biggest haul trucks carry about 400 tons, which is more than the weight of 70 elephants. Their tires are about 13 feet tall, taller than a grown-up on another's shoulders. Their engines are powerful, and drivers sit high up in a cab.
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What Crafty Clover says in this video
Intro
Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why are mining trucks so huge?
The Big Idea
Mining trucks are some of the biggest trucks on Earth! Their tires are taller than a grown-up. Why are they so huge?
Lots of Rock
Step one: Lots of Rock. A mine moves millions of tons of rock. So it needs trucks that carry as much as possible in one trip.
Huge Loads
Step two: Huge Loads. The biggest haul trucks carry about 400 tons. That is more than the weight of 70 elephants.
Giant Tires
Step three: Giant Tires. Their tires are about 13 feet tall, taller than a grown-up standing on another's shoulders. Their engines are powerful, and drivers sit high up in a cab.
A Closer Look
Let's take a closer look! Giant tires hold it up. A huge bed carries rock. A big engine powers it. The driver climbs to a high cab.
Quick Facts
Quick facts! A ladder or staircase is needed to climb into a haul truck's cab. Haul trucks are too big for regular roads. Some haul trucks can drive themselves. Giant trucks are often put together at the mine.
Think Like a Scientist
Now, think like a scientist! With a grown-up, measure 13 feet up a tall wall outside. Mark it with chalk or tape. Compare it with the height of a door. How many doors tall is it? Imagine a tire that tall!
Outro
Mining trucks are huge because mines move millions of tons of rock. The biggest carry about 400 tons, more than 70 elephants, on tires about 13 feet tall. Science is amazing! Keep asking questions! The more you look around, the more wonders you will find, so keep your eyes open! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!