Can energy change from one form to another? Give an example from your house. 能量可以从一种形式转化为另一种形式吗？请举一个家里的例子。

Why does every food chain start with a producer? Where does the producer get its energy from? 为什么每个食物链都以生产者开始？生产者从哪里获取能量？

What type of energy is stored in the food we eat? 我们吃的食物中储存着哪种类型的能量？

Describe how particles are arranged in a Solid. Do they move around? 描述固体中粒子的排列方式。它们会到处移动吗？

When iron, water, and air mix together, they make Rust. Is this a physical change or a chemical reaction? Why? 当铁、水和空气混合在一起时，它们会产生铁锈。这是物理变化还是化学反应？为什么？

What is the difference between Melting and Solidifying? 熔化和凝固之间有什么区别？

Name two Electrical Appliances you have at home and explain what they do. 列举两个你家里的电器，并解释它们的作用。

What do we call the energy an object has because it is moving? 物体因为运动而具有的能量称为什么？

All matter is made of tiny pieces. What happens to these pieces when we heat a substance? 所有物质都由微小的碎片组成。当我们加热物质时，这些碎片会发生什么？

In a food chain where a cat eats a mouse, which animal is the Predator and which is the Prey? 在一个猫吃老鼠的食物链中，哪种动物是捕食者，哪种是猎物？

Why can a liquid take the shape of a container while a solid keeps its own shape? 为什么液体可以呈现容器的形状，而固体却保持自己的形状？

If a material changes from a solid to a liquid, does it become a completely different substance? 如果一种材料从固体变成液体，它会变成一种完全不同的物质吗？

When we hit a drum, why does it make a sound? 当我们敲击鼓面时，为什么会发出声音？