Sound 声 - Grade 4 Chapter 6 KSSR

The picture shows an activity that Jian Sheng is doing.

How does Jian Sheng produce sound using the violin?

图中显示建胜进行的一项活动。

建胜如何使用小提琴发出声音？

• hit

  敲

• clap

  拍

• blow

  吹

• bow

  拉

The diagram shows the observation results of an experiment.

What does this experiment prove?

图中显示一项实验的观察结果。

这项实验证明了什么？

• Drums can produce sound

  鼓会发出声音

• Sound can move foam particles

  声音能推动泡沫颗粒

• The drum surface vibrates to produce sound

  鼓面因振动而产生声音

• The reflection of sound causes the foam particles to keep jumping

  声音的反射导致泡沫颗粒不停地跳动

The diagram is related to Phenomenon X.

Which characteristic of sound does Phenomenon X demonstrate?

图片与现象X有关。

现象X显示声音的哪些特征？

• It can reflect

  会反射

• It travels in a straight line

  沿着直线传播

• It travels in all directions

  往四面八方传播

• It can only travel through air

  只能在空气里传播

The diagram shows a fisherman using a certain technology to detect fish deep in the ocean.

What is this technology?

图中显示渔民应用某种技术来探测深海里的鱼群。

这项技术是什么？

• Echo

  回声

• Sonar

  声呐

• Ultrasound

  超声波

• Reflection of light

  光的反射

The diagram shows Lisa singing in the bedroom.

How can Lisa reduce the echo in the room?

图中显示丽芬在睡房里唱歌。

丽芬应该怎么减少房内的回声？

• Move the blanket out of the bedroom

  把被单移出睡房

• Use thicker curtains

  换上较厚的窗帘

• Use an iron bed frame

  使用铁质的床架

• Paint the walls with darker colours

  把墙壁漆上较深的颜色

Answer explanation

硬和光滑的表面会让回声更大。

软和粗糙的表面会让回声更小。

The harder and smoother the surface, the louder the echo.

The softer and rougher the surface, the lower the echo.

How does the instrument in the picture create sounds?

图中乐器是如何产生声音的？

• blow

  吹

• hit

  敲

• bow

  拉

• clap

  拍

How does the instrument in the picture create sounds?

图中乐器是如何产生声音的？

• blow

  吹

• hit

  敲

• bow

  拉

• clap

  拍

The diagram shows a type of equipment on a ship.

Choose the statements that describe the technology used by this equipment.

图中显示船上的一种设备。

哪些是这种设备所运用的技术的说明。

• This technology can measure the volume of seawater.

  此技术能测量海水的体积

• This technology can measure the depth of the seabed.

  此技术能测量海底的深度

• This technology can see through to observe marine life.

  此技术能够透视海中生物

• This technology can detect the location of objects on the seabed.

  此技术能探测物体在海底的位置

Answer explanation

Sonar cannot see through living things.

声呐不能透视生物。

Ultrasound can see through living things.

超声波能透视生物。

Which of the following sounds are harmful to us?

哪些声音对我们有害？

• The chirping of birds in the forest

  森林中的鸟叫声

• The honking of cars on a busy street

  繁忙街道上汽车的鸣笛声

Who can hear Ming Hua？

Choose all the correct answer

是谁能够听到明华的声音？

选出所有正确答案。

I. 凯嘉 Kai Jia

II. 汉街 Han Jie

III. 明华 Ming Hua

Iv. 祖安 Zhu an

V. 娜敏 Na Min

• I

• II

• III

• IV

• V