Mega Digger Rescue! How Excavators Work for Kids | Ozzie Zooms! Ep 1

How does a digger lift a rock as heavy as a CAR?! Big wheels turnin', rockets burnin', Ozzie and Cogsby, always learnin'! Zoom in! Zoom in! Zoom out! Zoom out! Ozzie Zooms! Let's figure it out! Today is the BIGGEST day! Because the Splash Park is starting? Wiggle-wiggle… wow. The diggers come TODAY! I'm planting the flowers around it. And I'm helping DIG it. Zoom-zoom! Diggers dig… and worms dig too. Worms aren't MEGA. We'll see. Morning, Ozzie! Rumble and I found a surprise in the Splash Park dig. A surprise? Like treasure?! Like a BIG rock. Right where the splash fountain goes. The fountain has to be ready by sunset. Can your crew help? We're on it! On it! Calculating… MEGA! Our big question: How do diggers DIG? Race you there! Waaait for meeee! Hard hats on when you get there! We know, Grandpa! WHOA. That's MEGA! It's so big… is it a dinosaur? It's an EXCAVATOR. Welcome, crew! First rule of the dig site… Hard hat. Bright vest. And stay behind the orange fence when Rumble is working. Here's my super-safety rule. If you can't see my eyes… …then I can't see YOU. Can you see me now? Nope! That's a hiding spot. Not safe! There you are. Now I can see your eyes! Can YOU see Ro's eyes? Point to them! Great pointing! Stay back from big machines. Got it. Safety… first! Hat… second. Rumble's engine is OFF. Want to see how she works? YES! Zoom out… it's HUGE. Zoom in… let's find the parts! At the bottom: TRACKS. Like giant belts with metal feet. This is the CAB. My seat, my windows, my two joysticks. Whoa, it spins all the way around! All the way. The cab turns in a full circle. Wheee… whoa… The big arm is the BOOM. Like your upper arm. The next part is the STICK. Like your arm from elbow to hand. And the scooper with teeth? The BUCKET. Like your hand. Tracks, cab, boom, stick, bucket! Which part does the scooping? The BUCKET! You got it! But how does the arm get so STRONG? There aren't any muscles in there! Muscles? Scanning for… muscles… Cogsby — SEE-THROUGH! Ka-CHUNK! See-Through ON! Detecting… hydro-lollipops! Hy-DRAU-lics. Hydraulics! Correct! A pump pushes OIL through the hoses. The oil pushes the PISTON, and the piston pushes the arm. Oil this way: arm goes up. Oil that way: arm goes down. Why OIL? Why not just air? Air squishes, like a balloon. But oil is a LIQUID, and liquids are super hard to squeeze. So when you push on it… the push goes right through! Rumble has pistons for the boom, the stick, AND the bucket. So the oil is like the excavator's MUSCLES! Exactly right. Say it with me: HY-DRAU-LICS! MEGA! Boom, stick, bucket… that sounds like a SONG! Song mode… ACTIVATED! Ka-CHUNK! Beep-beep-boop! Ready, crew? Boom goes up! Stick goes out! Bucket scoops the dirt about! Tracks go rumble, cab goes round, Dig, dig, dig into the ground! Push the oil, the piston slides, Liquid's strong, it won't squeeze inside! Hydraulics! Hydraulics! Like muscles made of oil! Boom goes up! Stick goes out! Bucket scoops the dirt about! Tracks go rumble, cab goes round, dig, dig, dig into the ground! Where's the boom? Up high! Where's the stick? Reaching by! Where's the bucket? Scoop it, try! Boom goes up! Stick goes out! Bucket scoops the dirt about! Tracks go rumble, cab goes round, dig, dig, dig into the ground! Try-It Test! Let's build a MINI hydraulic arm! Measure twice, build once. Tube on tight. First, with just air inside. If I push this one… will the other one push out fast, or squishy-slow? Fast! Like a rocket! Um… it'll explode? It won't explode. Squishy! The air got squeezed. Aw, not a rocket. Good guess. Guessing is how scientists start! Now let's use a liquid. Water works just like Rumble's oil. Squishy or strong? What do YOU think? WHOA! I pushed YOU! Push here… the arm lifts THERE. That's hydraulics. It's a mini Rumble! You built hydraulics! Results: air goes squish. Liquid goes PUSH! Want to try it? Ask a grown-up for syringes with NO needles, a tube, and water. Alert! Mud detected! Rumble weighs as much as about ten cars! So why doesn't she sink in that mud? Test time! Tess, get the racers! Same weight! Wheels versus tracks! Which one will sink? It's getting EATEN! The tracks are WINNING! But WHY? Cogsby — See-Through! Ka-CHUNK! Wheels push down on tiny spots, so they poke in. Tracks spread the weight across a big flat area, so each spot pushes gently. Like snowshoes! Big feet don't sink! Chompers has TRACKS now! That's why big diggers wear tracks. Tracks spread the weight! Say it! Yeah! Okay crew, eyes on me. Let's get that boulder out! Stay back! See the eyes! Hmm. It won't budge. I can't get a grip on it. Just pull HARDER! Zoom-zoom! Pulling harder isn't always smarter. What's your chant? Zoom in… zoom out… figure it out! And the fountain has to be ready by sunset! But WHYYY is it stuck? Good question, Rocco! We need to see what's UNDER the ground! Cogsby — SEE-THROUGH… DEEP mode! Deep mode! Ka-CHUNK-CHUNK! The top layer is TOPSOIL. Dark and soft. Plants grow roots here! Under that is SUBSOIL. Harder, with little rocks. And way down deep is BEDROCK. Solid rock. Topsoil, subsoil, bedrock! Which layer is on top? TOPSOIL! Nice! Whoa! Most of the rock is hiding underground! Zoom out… the dirt is HUGGING the rock. That's why it's stuck! So what would an engineer do? Pull super fast! Ask Chompers to eat it! Dig the dirt AWAY from around it! Yes! Dig AROUND it… then make a ramp… and ROLL it out! That's exactly how real crews do it. Let's go! Measure twice… …build once! Count my buckets into the dump truck. We need TEN to clear the ring! ONE! TWO! THREE! FOUR! FIVE! Halfway! Count with us! SIX! SEVEN! EIGHT! NINE! TEN! Ten buckets! The rock is free! Now a ramp, nice and gentle. Don't lift it. Push it! Rolling is easier than lifting. IT'S OUT! We figured it OUT! Machine off, now we can come close. Great work, crew! It's too cool to throw away. What if it's… a CLIMBING ROCK for the Splash Park?! I love it! FACT FLASH! The biggest mining diggers in the world can scoop more than TEN ELEPHANTS' weight of rock in ONE bucket! That's… GIGA-MEGA! Were the elephants okay? It's just how HEAVY. No real elephants! Fact Stack time! Help us build the tower! An excavator has… TRACKS, CAB, BOOM, STICK… BUCKET! And the cab spins all the way around! Oil pushes the pistons, because liquid is hard to… SQUEEZE! Tracks spread the… WEIGHT! Topsoil, subsoil… BEDROCK! And if you can't see the operator's eyes… …they can't see YOU! Stay back! Fact Stack… complete! MEGA! How do diggers dig? With pistons, tracks, and teamwork! And by zooming out to see the whole problem. Juno! I learned how diggers DIG! Boom, stick, bucket! No way. I learned how WORMS dig! They dig tunnels without ANY hands! Without hands?! How?! Wiggle-wiggle, WOW! Come see my secret underground garden! And hey… I saw YOUR worm in the topsoil! That's Wiggles! Watch it next on Juno Blooms! Zoom in, zoom out… Wonder it, draw it… …see you next time! Ka-CHUNK! …Dizzy.