Revision (Year 5)

科学练习（1）

1.物质的形态可分为_________、________和_______。

2.固体有________、固定的________和_________、及占据__________。

3.液体有________和固定的________，但没有固定的________。

4.气体没有固定的________和________，它能被________。

5.水的3种形态：

a.固体 - ________  b.液体 - ________

c.气体 - ________

6.物质形态的变化：

a. ________ :固体     液体

b. ________ :液体     气体（速度慢）

c. ________ :液体     气体（速度快）

d. ________ :气体     液体

e. ________ :液体     固体

科学练习（2）

1.物质的化学性质可分为________、________和________。

2.我们可以用_______________来测试物质的化学性质。

3. 酸性物质：红色石蕊试纸      ________

             蓝色石蕊试纸      ________

4. 中性物质：红色石蕊试纸      ________

             蓝色石蕊试纸      ________

5. 碱性物质：红色石蕊试纸      ________

             蓝色石蕊试纸      ________

6. 酸性物质带有______味，如：________、________和________。

7. 中性物质一般有_____味、_____味或无味。

8. 碱性物质有_____味或用手触摸时会有________的感觉。

Unit 7 : Heat

1. Which of the following statements is true

    about heat?

A. It can be seen.

B. It can be measured.

C. It is a form of energy.

D. It makes a substance cooler.

2.  A beaker of water is on fire. Which of the

statements is true about the water in the

beaker?

   I. The water in the beaker losses heat.

  II. The water in the beaker gains heat.

 III. The temperature of water in the beaker

      rises.

IV. The temperature of water in the beaker

     falls.

A. I and II                C. II and III

B. I and IV               D. II and IV

3. Which of the following is not used to

    measure temperature?

A. Barometer

B. Clinical thermometer

C. Laboratory thermometer

D. Electronic thermometer

4. What is the unit for temperature?

A. cm                 C.    C

B. kg                  D. mm

5. There is a pot of hot coffee on the table.

Why does the hot coffee get cooler after

 half an hour?

A. Hot water is added into it.

B. It gains heat to the surroundings.

C. It loses heat to the surroundings

6. What are the effects of heat on matter?

   I. Heat makes the matter expands.

  II. Heat makes the matter contracts.

 III. The size of the matter increases.

IV.  Matter becomes lighter.

A. I and II               C. I, III and IV

B. I and III              D. I, II, III and IV

Unit 8 : States of Matter

1. Which of the following statements is not

    correct about matter?

A. It has mass.

B. It has volume.

C. It occupies space.

D. Everything around us is not matter.

2. Which of the following statements is not

    true about solid?

A. It has fixed mass.

B. It has fixed volume.

C. It has no fixed volume.

D. It cannot be compressed.

3.Which of the following pairs is correct?

Gas	Liquid	Solid
Nitrogen	Water	Hydrogen
Water	Oil	Ice cream
Oxygen	Milk	Ice
Iron	Sugar	Cheese

 A.

B.

C.

D.

4.What is the melting point of ice?

A. -2  C                  C. 2   C

B. 0   C                  D. 100   C

·         It is a slow process. ·         It is a continuous process. ·         It happens at any temperature

5.

   What is the process described in

   information above?

A. Evaporation           C. Condensation

B. Boiling                    D. Melting

6. What is the change of state of water in the

    melting process？

A. Gas      Liquid         C. Ice       Water

B. Liquid         Solid     D. Water       Ice   

7. Cong Wei kept his shoes under the sun.

After few hours he observed that his

shoes has dried. What is the process that

took place?

A. Boiling                    C. Condensation

B. Melting                   D. Evaporation

8. What is the importance of water cycle?

  I. To control the temperature of the Earth.

 II. To keep the balance of plants.

III. For the survival of the living things.

IV. To avoid the amount of water on the

     Earth from drying up.

A. I, II and III              C. I, III and IV

B. II, III and IV           D. I, II, III and IV