Making Music with Water

Have you ever tried making music with glasses or bottles filled with water? I bet your favorite band hasn’t. Experiment with your own special sounds by turning glasses of water into instruments, make some cool music and find out how it works.

What you’ll need:

Five or more drinking glasses or glass bottles.

Water.

Wooden stick such as a pencil.

Instructions:

Line the glasses up next to each other and fill them with different amounts of water. The first should have just a little water while the last should be almost full, and the ones in between should have slightly more than the first.

Hit the glass with the least amount of water and watch the sound, then hit the glass with the most water, which makes the higher sound?

九年级英语试题卷(第3页,共8页)

Hit the other glasses and see what noise they make. See if you can get a tune going by hitting the glasses in a certain order.

What’s happening?

Each of the glasses will have a different tone when you hit with the pencil. The glass with the most water will have the lowest tone while the glass with the least water will have the highest. Small vibrations are made when you hit the glass, and this creates sound waves which travel through the water. More water means slower vibrations and a deeper tone.

1.How many glasses or bottles are needed in the experiment according to the passage?

A. Two. B. Three. C. Four. D. Five or more.

2.What can we get from the experiment in the passage?

A. Light. B. Music. C. Water. D. Glasses.

3.Which glass can have the lowest tone in the experiment?

A. The glass with no water. B. The glass with the most water.

C. The glass with the least water. D. All the glasses.

4.What does the underlined word “vibrations” mean?

A. 破碎 B. 响声 C. 震动 D. 裂纹

5.Where may the passage come from?

A. TV program. B. Storybook.

C. Science book. D. Advertisement.

Have you ever met some problems in your daily life? Do you often feel annoyed about some annoying things in your life? If you can't express your requests politely, you can't get rid of the annoying things. So if you need help, you can write letters to our program Make You Happy for help. Here are some problems from some people and our advice for them.

Name

Place

Problem

Requests

Lin Zheng

School dormitory

His roommate talked

loudly before getting into bed and he couldn't have a good sleep.

First, tell him in a polite way "Would you mind not talking loudly?" If he doesn't obey, ask your teacher for some help.

Julie

Clothes store

Got a shirt in the wrong size.

Ask the shop assistant to change it for a right one for you.

Mary

Supermarket

Felt annoyed by the shop assistant who followed her around.

You can say, "Could you please not follow me around? I'll ask you if I need help."

Johnson

Station

Someone cut in line in front of him.

You can say, "Would you mind waiting in line?"

Harris

Bus

Someone smoked in front of him in the bus.

You can say, "Would you mind not smoking here? It's very dangerous."

1.How many problems are mentioned in this passage?

A. Four. B. Five. C. Six. D. Seven.

2.If your roommate talks loudly before bed, you can ________.

A. fight with him

B. talk with him in a polite way like "Would you mind not talking loudly?"

C. ask your teacher for help without talking with him first

D. scold him in some bad words

3.What happened to Mary?

A. People smoked in front of her in the bus.

B. When she waited in line in the station, someone cut in line.

C. She was followed everywhere by the shop assistant in the supermarket.

D. Someone smoked in front of her.

4.What does the underlined word "dormitory" mean in Chinese?

A. 教学楼 B. 饭堂

C. 宿舍 D. 实验室

5.Which of the following is TRUE?

A. Someone smoked in front of Johnson in the bus.

B. You can make a call to ask the program for help.

C. Li Zheng can't have a good sleep in the supermarket.

D. When you get the wrong size clothes, you can ask the shop assistant to change.

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