Cells
States of matter
Forces
Sound / earth
Random
100
What is the basic unit of life?
生命的基本单位是什么？
Cells
100
Which state of matter is shown in this photo?
这张图片中显示的是哪种物质状态？
100
What force pulls objects down?
什么力把物体往下拉？
Gravity
100
How is sound caused?
声音是如何产生的？
Vibrations
100
What planet do we live on?
我们生活在哪个星球上？
Earth
200
What is the powerhouse of the cell?
细胞的“能量工厂”是什么？
Mitochondria
200
Which state of matter can melt?
哪种物质状态可以融化？
solids
200
What causes the tides?
潮汐是由什么引起的？
The Moon’s gravity
200
How is a solar eclipse formed?
日食是如何形成的？
The moon blocks the sun
200
What gas do humans need to breathe?
人类需要吸入什么气体？
Oxygen
300
Which part of the plant cell makes food?
植物细胞的哪个部分制造食物？
Chloroplast
300
Which stage of the water cycle is caused by the sun?
水循环中的哪个阶段是由太阳引起的？
Evaporation/transpiration
300
What type of energy comes from the Sun?
来自太阳的是什么能量？
Light energy / heat energy
300
What is shown in this photo?
这张图片中显示的是什么？
Tectonic plates
300
What part of the plant absorbs water?
植物的哪个部分吸收水？
Roots
400
Name one difference between a plant cell and an animal cell.
说出植物细胞和动物细胞的一个不同点。
Plant cells have a cell wall/vacuole/chloroplasts
400
Describe the changes of state required to go from a solid to a gas.
描述从固体变成气体需要经历哪些状态变化？
Melting, then evaporation
400
What is the difference between mass and weight?
质量和重量有什么区别？
Mass = amount of matter
Weight = force of gravity
400
Label this diagram (100 points each)
给这个图标注（每个部分100分）
Crust
Mantle
Inner core
Outer core
400
What type of energy is stored in food?
食物中储存的是什么能量？
Chemical energy
500
What does the cell membrane do?
细胞膜有什么作用？
Controls what goes in and out
500
What states of matter are involved in sublimation?
升华涉及哪两种物质状态？
Solid to gas
500
What energy does a moving car have? Describe the transfer of energy between adding fuel and the car moving.
行驶中的汽车有什么能量？描述从加入燃料到汽车运动过程中能量的转化。
Chemical energy -> electrical -> potential
500
When sound is absorbed, what type of energy does it become?
当声音被吸收时，它会变成哪种能量？
Heat energy
500
Why can we see lightning before we hear thunder?
为什么我们先看到闪电再听到雷声？
Light travels faster than sound