Oceans
海洋
海洋
How much of Earth’s surface is covered in land?
地球表面有多少被陆地覆盖?
~29%
约 29%
Why do we get thirsty?
我们为什么会感到口渴？
Because our body needs water, so our brain tells us to drink by making us thirsty.
因为我们的身体需要水，所以大脑通过让我们感到口渴来提醒我们喝水。
Where does (almost) all energy for life on Earth come from?
地球上几乎所有生命的能量来自哪里？
The Sun
太阳
What's the difference between lightning and thunder?
闪电和打雷有什么区别？
Lightning is electricity and light; thunder is the sound.
闪电是电和光；雷声是声音。
Which food group strengthens the bones?
哪个食物类群可以强壮骨骼？
Dairy
乳制品（奶制品）
What are three kinds of water?
三种类型的水是什么？
Freshwater, saltwater, brackish water
淡水、咸水、半咸水
Which organ is the biggest organ?
哪个器官是人体最大的器官？
The skin
皮肤
Organisms that take energy from sunlight to create their own food are known as what?
利用阳光能量制造自己食物的生物被称为？
Producers/Autotrophs
生产者/自养生物
What is the “eye” of a storm?
风暴的“风眼”是什么？
Calm, circular center of a severe tropical cyclone or hurricane
强热带气旋或飓风平静的圆形中心
What are the five food groups?
五大食物类群是什么？
Fruits, Vegetables, Grains, Protein foods, Dairy
水果、蔬菜、谷物、蛋白质食物、乳制品（奶制品）
What are the 3 layers of the ocean?
海洋的三层结构是什么？
Sunlight layer, twilight layer, midnight layer
阳光层、暮光层、午夜层
How many bones does a normal adult human have?
正常成年人有多少块骨头？
206 bones
206块骨头
Animals that eat other animals are called what?
吃其他动物的动物称为什么？
Carnivores
肉食动物
What type of ocean water powers storms like hurricanes?
什么类型的海水为飓风等风暴提供能量？
Warm ocean water
温暖的海水
What's the microorganism that makes bread rise (and soft)?
使面包发酵变软的微生物是什么？
Yeast
酵母菌
How deep is the twilight zone?
暮光层有多深？
200–1000m
200–1000米
Which organ filters our blood?
哪个器官过滤我们的血液？
Kidneys
肾脏
Organisms that break down dead stuff to enrich soil are called what?
分解死物以肥沃土壤的生物称为什么？
Decomposers
分解者
What is it called when water can hold up something denser than it, like a penny?
当水能托起比它密度大的物体（如硬币）时，这称为什么？
Surface tension
表面张力
What are three types of fossil fuels?
三种化石燃料是什么？
Coal, petroleum, natural gas
煤炭、石油、天然气
What is the source of light on an anglerfish?
鮟鱇鱼发光的来源是什么？
Bioluminescent bacteria
发光细菌
What is the body’s ability to keep internal conditions steady (keep you alive) called?
身体保持内部环境稳定的能力称为什么？
Homeostasis
内环境稳态（自稳态）
Animals who mostly eat insects are called what?
主要以昆虫为食的动物称为什么？
Insectivores
食虫动物
How does a storm (like a hurricane) start spinning?
风暴（如飓风）是如何开始旋转的？
Earth’s rotation (Coriolis effect)
地球自转（科里奥利效应 / 地转偏向力）
Where are stars born?
恒星在哪里诞生？
Stellar nebula
星际星云（恒星星云）