五年级科学周

1. 以下哪项不是电的来源？

Which of the following is not the source of electricity?

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2. 下图显示一种电源。哪项正确地说明该电源？

The figure below shows a power supply. Which item correctly describes the power supply?

• 提供大量的电能

  Provide a lot of power

• 把化学能转换成电能

  Convert chemical energy into electrical energy

• 适用于计算器和热水器

  Suitable for calculators and water heaters

• 通过磁力把动能转换成电能

  Convert kinetic energy into electrical energy through magnetism

6. 什么是完整电路？

What is a complete circuit?

• 有电线的电路

  Circuit with wires

• 能被截断或接通的电路

  Circuit that can be cut off or connected

• 由灯泡和电线组成的电路

  Circuit composed of light bulbs and wires

• 能让电流顺利通过每个元件的电路

  The circuit that allows the current to pass through each component smoothly

7. 完整电路由哪些元件组成？

What are the components of the complete circuit?

• 灯泡、干电池和开关

  Light bulbs, dry batteries and switches

• 灯泡、干电池、电线和开关

  Light bulbs, dry batteries, wires and switches

• 灯泡、灯泡座、电线和开关

  Bulbs, bulb holders, wires and switches

• 灯泡、干电池、干电池厘和开关

  Light bulbs, dry batteries, dry batteries and switches

8. 下图显示一个电路。电路中的元件Y有什么功能？

The figure below shows a circuit. What is the function of component Y in the circuit?

• 让电流通过

  Let the current pass

• 提供充足的电流

  Provide sufficient current

• 测试灯泡的亮度

  Test the brightness of the bulb

• 接通与截断电路

  Make and cut off the circuit

9. 以下哪个是元件两个电池的符号？

Which of the following is the symbol for the two batteries of the component?

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10. 图中的电路符号有什么用途?

What is the purpose of the circuit symbol in the picture?

• 连接电路，让电流通过

  Connect the circuit and let the current pass

• 提供光能

  Provide light energy

• 提供电能

  Provide electricity

• 截断电路

  Cut off circuit

11. 哪个电路中的灯泡会发亮？

Which circuit of the bulb will light up?

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12. 什么是并联电路？

What is a parallel circuit?

• 电路元件依次连接起来的电路

  A circuit in which circuit elements are connected in sequence

• 电路元件并列连接在一起的电路

  A circuit in which circuit elements are connected together in parallel

• 开关只是控制连接着的电路元件

  The switch just controls the connected circuit element

• 电流分开传送到连接着的电路元件

  The current is transmitted separately to the connected circuit elements

13. 以下显示电路M。以下哪项是电路M电路图？

Circuit M is shown below. Which of the following is the circuit diagram of circuit M?

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