Electricity
What component is used to turn a circuit on or off?
什么元件用来打开或关闭电路？
A switch (开关)
What gas do humans breathe in that is required for burning (combustion)?
人类吸入的哪种气体是燃烧所必需的？
Oxygen
What is the invisible force that pulls objects down toward the centre of the Earth?
把物体向下向地心拉的隐形力是什么？
Gravity
What do we call an animal that only eats plants?
我们把只吃植物的动物称为什么？
A herbivore
What major organ pumps blood around the human body?
人体内的哪个主要器官负责把血液输送到全身？
The heart
What component converts electrical energy into light energy?
什么元件将电能转化为光能?
A bulb / lamp
What type of change occurs when baking a cake, where new substances are made and it cannot be undone easily?
烤蛋糕时发生的是哪种变化（在此期间产生了新物质且无法轻易还原）？
A chemical change / chemical reaction
What type of force opposes motion when two surfaces rub against each other?
当两个表面互相摩擦时，什么力会阻碍运动？
Friction
What do the arrows in a food chain represent?
食物链中的箭头代表什么？
The flow of energy
What state of matter has a fixed volume but takes the shape of its container?
哪种物质状态有固定的体积，但形状会随容器而变？
Liquid
What will happen to the other bulbs in a series circuit if one bulb breaks?
在串联电路中，如果一个灯泡坏了，其他灯泡会怎么样？
They will all go out
Give one sign that shows a chemical reaction has taken place.
举出一个表明发生了化学反应的迹象。
Colour change / gas bubbles / temperature change / light produced
In what unit do scientists measure force?
科学家用什么单位来测量力？
Newtons
What is the difference between a food chain and a food web?
食物链和食物网有什么区别？
A food chain is a single pathway; a food web is many interconnected food chains
What process do plants use to make their own food using sunlight?
植物利用阳光制造自身养分的植物过程叫什么？
Photosynthesis
What unit is used to measure electrical current?
测量电流的单位是什么？
Amperes / Amps
When an acid reacts with an alkali, they cancel each other out. What is this specific type of chemical reaction called?
当酸与碱反应时，它们会互相抵消。这种特定类型的化学反应叫什么？
Neutralization
What scientific instrument is used to measure the size of a force?
用什么科学仪器来测量力的大小？
A force meter / Newton meter / spring balance
What do we call an organism that must eat other living things to get its energy?
我们把必须以其他生物为食来获取能量的生物称为什么？
A consumer
What type of blood vessels carry blood away from the heart to the rest of the body?
哪种血管将血液从心脏输送到身体的其他部位？
Arteries
If you add a second battery/cell in a series circuit, what happens to the brightness of a single bulb?
如果在串联电路中增加第二节电池，单个灯泡的亮度会发生什么变化？
It gets brighter
What color will universal indicator paper turn if it is dipped into a highly acidic solution like lemon juice?
如果将广用指示剂试纸浸入像柠檬汁这样的强酸性溶液中，它会变成什么颜色？
Red
What is the difference between mass and weight?
质量和重量有什么区别？
Mass is the amount of matter; weight is the force of gravity on that matter
What term is used to describe an animal that is at the very top of a food chain and has no natural predators?
什么术语用来描述处于食物链最顶端且没有天敌的动物？
An apex predator
What is the scientific term for the evaporation of water vapor from the leaves of a plant?
植物叶片中水蒸气蒸发的科学术语叫什么？
Transpiration (蒸腾作用)