Particle
At a lower temperature (低温), particles move _____(faster/slower)
Slower
The direct transfer of heat from one substance to another substance by direct contact is _______
热量通过直接接触从一个物体转移到另一个物体是_____
conduction 热传导
Heat will flow from _______ (warmer/cooler) object to the __________(warmer/cooler)object.
热会从_____物体传到________物体
warmer; cooler
List three things that a plant needs to grow.
ANY of these three: air, water, sunlight, nutrient, right temperature, and time
Hot air ________ (expands/contracts) 扩张/收缩
expands
You are holding a glass of ice-cold water (0 oC). Your body is 37 oC.
What is the direction of heat transfer? 热传递的方向是？
from body to the ice
a substance that readily transfers heat or electrical energy 容易导热或者导电的材料
The process in which ice turns into water is called _____
冰变成水的过程叫
melting 融化
Gas, liquid or solid? The particles move freely throughout the air. 固体、液体、还是气体？粒子在空气中自由移动
gas
the transfer of thermal energy by the circulation or movement of a liquid or gas 通过液体或者气体循环运动产生的热量传输
convection 热对流
Is cotton a conductor or insulator?
棉花是导体还是绝缘体?
What is the green stuff on the cover of your student book? Hint: it's a type of bacteria(细菌). 书封面的绿色东西是什么？
Cyanobacteria/algal bloom 蓝细菌
Solid, liquid or gas? The particles can only vibrate in place. 固体、液体，还是气体？只能在原地振动的粒子
solid
Energy of motion
kinetic energy
What type of plant will we grow this week? 这周我们要种什么植物？
soybean 黄豆
Hotter air has a ________ (higher/lower) density.
热空气的密度______(高/低)
lower 低
Conduction, convection or radiation? 热传导、热对流还是热辐射？
Holding a mug of hot chocolate(热巧克力杯子) to keep your hands warm.
conduction
a measure of the average energy of motion of the particles of a substance 粒子的平均动能
The rain falls from the sky via a process called _____
雨通过什么过程会从天上掉下来？
condensation 冷凝