69 Energy on the Playground-Mid

Energy on the Playground FOCUS Question How does energy move things on a playground?

操场上的能量焦点问题能量是如何在操场上移动物体的?

Get Moving! Run! Jump! Climb! A playground gets you moving! You need energy to have fun on a playground. Energy gives you power to move. You get energy by eating food.

行动起来!快跑!跳!攀爬!游乐场让你动起来!在操场上玩得开心需要精力。 能量给你移动的力量。 你通过吃东西来获得能量。

Give It a Push! You can run and jump when you push against the ground. A push is a force. A force is energy that moves things. Push down. You jump up. Push backward. You go forward. If you push harder, you go farther.

推一下!当你推着地面时，你可以跑和跳。 推力是一种力。力是使物体移动的能量。 下推。你跳起来。推动落后。 你往前走。越用力，走得越远。

Ladders Let's climb! Your legs push down on the steps of the ladder. Your arms pull you up. A pull is another kind of force. Science in Your World On a jungle gym, you push down on the bars with your legs. You pull yourself up with your hands.

我们爬吧!你的腿压在梯子的台阶上。 你的手臂把你拉起来。拉力是另一种力。 在攀爬架上，你用腿往下推栏杆。 用手把自己拉起来。

Slides Sit at the top of the slide. Then let go. Zoom! What force moves you down the slide? Gravity pulls you down. Gravity is a force. It pulls all things toward the ground.

坐在滑梯的顶端。 然后放手。祖姆！是什么力量让你滑下了滑梯? 重力把你往下拉。重力是一种力。 它把所有东西都拉向地面。

Seesaws Up. Down. Up. Down. Your legs push you up on a seesaw. Your friend goes down. Your friend pushes up. You go back down. Picture a cat and a bear on a seesaw. The bear pushes up with its legs. But it comes right back down. It is much bigger than the cat. The little cat is stuck up in the air!

跷跷板。下来。向上下来。 你的腿把你推到跷跷板上。 你的朋友完蛋了。你的朋友向上推。 你回去。想象一只猫和一只熊在跷跷板上。 熊用腿往上推。 但它马上又下来了。 它比猫大得多。 小猫被困在空中!