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  • This episode of SciShow Kids is brought to you by Child and Teen Checkups.

  • Every kid needs a checkup at least once a year.

  • If you live in Minnesota, Child and Teen Checkups can help.

  • Learn more at GetCTC.com.

  • Jessi: Hey, Bill! Hey, Webb! What are you up to?

  • Bill: We're playing a game!

  • Webb: A jumping game!

  • Bill: And it's my turncheck it out!

  • Bill: Yes!

  • I passed that flag, which means I jumped farther than Webb did last time!

  • Could you move the flag to where I landed, please?

  • Jessi: Sure!

  • Bill: Thank you!

  • Webb: OK, my turn!

  • Now all I have to do is jump past the spot where Bill landed.

  • Jessi: So each time you take a turn, you try to jump just a little bit farther?

  • Webb: Exactly!

  • Webb: Oh, phooey.

  • I couldn't jump far enough!

  • Jessi: Hmmm

  • I bet you could both jump farther than this.

  • Yes, you too, Webb!

  • All you need is some science to help you.

  • I can think of two tricks you can both try right now!

  • Think about what your body does when you jump.

  • You bend your knees, then use your muscles to push off the ground as hard as you can, launching yourself into the air.

  • You're both really good at that!

  • But if you want to jump farther, the first thing you can do is find a way to move faster.

  • Think about when you throw a softballif you throw it hard, so it's zooming through the air when you let go, it'll travel really far!

  • But if it's moving slowly when it leaves your hand, it'll drop to the ground before it can go very far.

  • Jumping is like that, too.

  • So, can you think of a way to give yourself a speed boost when you jump?

  • Bill: We could make our muscles stronger?

  • Jessi: That's true!

  • And practicing jumping is a great way to get super strong.

  • But that takes time, and there's something else you could do that would help you get faster right now.

  • Webb: Oh, I know!

  • We could do a run-up first!

  • Jessi: Great idea, Webb!

  • If you're already moving really fast when you jump, you'll go farther than if you just tried to jump from standing still.

  • So that's one tip you can try!

  • And I can think of one more: I noticed you're both jumping straight ahead of you, instead of up.

  • Bill: Well, of course we are, Jessi!

  • We're trying to jump forward as far as we can, not as high as we can.

  • Jessi: That's true, Billif you want to go far, jumping forward is important.

  • But it's also important to jump up a little, too, so you're on more of a diagonal.

  • Think about that softball again.

  • What happens if you throw it straight ahead of you?

  • It might go kind of far, but pretty soon it will hit the ground and roll, instead of moving farther through the air.

  • It keeps rolling because it had lots of speed left, but it was so close to the ground that it landed really quickly!

  • If you throw the ball forward and up, on a diagonal, it will take much longer to fall

  • to the ground, and in the meantime, it has a chance to move much farther through the air.

  • So if you jump on a diagonal, you'll also go farther!

  • Webb: OK, so to jump farther than that flag, all I have to do is run up, then jump on a diagonal?

  • Jessi: I bet it will help!

  • Webb: I'm going to try it!

  • Webb: I did it!

  • Bill: Yay!

  • Jessi: That's fantastic, Webb!

  • Bill: Can I use these tips, too?

  • Jessi: Of course!

  • I bet you'll also be able to jump farther than you could before.

  • Why don't you both keep taking turns and see how far you can go?

  • Webb: Yeah!

  • Thanks for the help, Jessi!

  • Jessi: You bet!

  • This is a great game.

  • You get to run and jump and play, all at the same time!

  • When you play, you get your blood pumping and your muscles moving.

  • Your heart beats faster, you breathe harder, and you get stronger!

  • That's all really important for staying healthy.

  • And so is getting your yearly checkup at the doctor!

  • With over six hundred muscles in your body, it's important to make sure they're all

  • working the way they should.

  • Your doctor can help you find problems early.

  • And when it comes to fixing problems in your body, early is always best.

  • If you live in Minnesota, learn more at GetCTC.com

  • If you don't, you can find the link in the description, and find out what benefits are

  • available to you.

  • Thanks, and we'll see you next time here at the Fort!

  • Webb: Bye!

  • Bill: See ya!

This episode of SciShow Kids is brought to you by Child and Teen Checkups.

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A2 初級 美國腔

你能跳多远?(How Far Can You Jump?)

  • 15 2
    joey joey 發佈於 2021 年 05 月 07 日
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