【精選內文】

Motion and Force運動與力

motion　(n.) 運動

The act of moving.

移動的動作。

We may move the car in a zigzag motion.

我們可以使汽車做曲線運動。

object　(n.) 物體

A thing that you can see, hold, or touch.

讓人能看得到、握得住、摸得著的東西。

Put an object on one side of the balance.

把一個物體放在天秤的一邊。

speed　(n.) 速率；速度

How fast something moves.

物體移動得有多快。

The car moved at a very fast speed.

那輛車以非常快的速度疾駛而過。

force　(n.) 力

A push or a pull that makes something move.

能夠使物體移動的推力或拉力。

We use a force to move something.

我們用力去移動物體。

pull　(n.) 拉力

A force that moves something closer to you.

一種使物體靠近的力量。

You can move something with a pull.

你可以藉由拉力來移動物體。

Unit Review

◆Draw lines to match.

pull 　　物體

object 　拉力

fuel 　　燃料

◆Circle the correct one.

(1) A (pull, push) is a force that moves something away from you.

(2) Poles that are the same (repel, attract) each other.

(3) (Electricity, Gravity) makes the lights work.

◆Choose the answer.

(1) Iron is one kind of __________.

　　 ａ pitch　ｂ metal　ｃ gravity　ｄ magnet

(2) A __________ is how high or how low a sound is.

　　 ａ move　ｂ vibrate　ｃ repel　ｄ pitch

(3) A __________ is something that stores energy.

　　 ａ magnet　ｂ fuel　ｃ battery　ｄ direction

◆ Find a vocabulary word that completes each sentence.

speed reflect pitch

(1) A mirror __________s light.

(2) The car moved at a very fast __________.

(3) A __________ means how high or how law a sound is.

◆Listen to the recorded sentences and fill in the blanks with correct words.

(1) Put an __________ on one side of the balance.

(2) A __________ can change an obiect’s position.

(3)__________ is another kind of energy.

(4) The __________ from the Sun keeps us warm.

(5) Can you tell me the __________ of the sound?

(6) Wood, natural gas, and oil are __________s.

Remember?

Please fill in the blanks. 填出下列空格的答案

__________ 推；推力

__________ 拉；拉力

__________ 反射

__________ 光

__________ 極

__________ 電池

__________ 排斥

__________ 吸引

__________ 磁鐵

Cooldown Section

Kid Inventor Richie Stachowski

A kid can invent a useful thing.

Kid inventor Richie Stachowski made a new tool.

He was on vacation with his family in Hawaii.

He could not talk to his father underwater.

So when he got back home, he started to think about a new tool.

He tried different ways to make sound in water.

Then he made a new tool called the Water Talkie.

Today people use it to talk under water.

He was only 10 years old when he made it.

小小發明家──里奇‧史塔哥夫斯基

小朋友也能發明出有用的東西。

身為小小發明家的里奇‧史塔哥夫斯基，就發明出了一項新工具。

當時他和他的家人一起在夏威夷度假。

他在水裡沒辦法跟爸爸說話。

於是他回家以後，便開始思考如何創造一項新工具。

里奇用了許許多多的方法，嘗試要在水中發出聲音。

後來他發明出了叫做「Water Talkie」的東西。

現在人們都使用它來在水裡講話。

里奇完成發明的那一年，他只有十歲而已。

【精選內文】

Motion and Force運動與力

motion　(n.) 運動

The act of moving.

移動的動作。

We may move the car in a zigzag motion.

我們可以使汽車做曲線運動。

object　(n.) 物體

A thing that you can see, hold, or touch.

讓人能看得到、握得住、摸得著的東西。

Put an object on one side of the balance.

把一個物體放在天秤的一邊。

speed　(n.) 速率；速度

How fast something moves.

物體移動得有多快。

The car moved at a very fast speed.

那輛車以非常快的速度疾駛而過。

force　(n.) 力

A push or a pull that make...

Unit 1 為科學做準備（一）──我想成為科學家
Preparing for Science One
16 Unit Opener
18 Vocabulary
26 Unit Review
30 Remember?
32 Cooldown Section
Unit 2 為科學做準備（二）──實驗器材備齊囉
Preparing for Science Two
34 Unit Opener
36 Vocabulary
42 Unit Review
46 Remember?
48 Cooldown Section
Unit 3 生命科學（一）──原來青蛙是兩棲類
Life Science One
50 Unit Opener
52 Vocabulary
58 Unit Review
62 Remember?
64 Cooldown Section
Unit 4 生命科學（二）──先有蛹還是先有蝴蝶？
Life Science Two
66 Unit Opener
68 Vocabulary
76 Unit Review
80 Remember?
82 Cooldovvn Section
Unit 5 地球科學（一）──我是地理專家
Earth Science One
84 Unit Opener
86 Vocabulary
92 Unit Review
96 Remember?
98 Cooldown Section
Unit 6 地球科學（二）──颶風強還是龍捲風強？
Earth Science Two
100 Unit Opener
102 Vocabulary
108 Unit Review
112 Remember?
114 Cooldown Section
Unit 7 物質科學（一）──水結冰是物理變化還是化學變化？
Physical Science One
116 Unit Opener
118 Vocabulary
126 Unit Review
130 Remember?
132 Cooldown Section
Unit 8 物質科學（二）──十歲小孩也可以當發明家
Physical Science Two
134 Unit Opener
136 Vocabulary
144 Unit Review
148 Remember?
150 Cooldown Section
154 Answers
162 Index

Unit 1 為科學做準備（一）──我想成為科學家
Preparing for Science One
16 Unit Opener
18 Vocabulary
26 Unit Review
30 Remember?
32 Cooldown Section
Unit 2 為科學做準備（二）──實驗器材備齊囉
Preparing for Science Two
34 Unit Opener
36 Vocabulary
42 Unit Review
46 Remember?
48 Cooldown Section
Unit 3 生命科學（一）──原來青蛙是兩棲類
Life Science One
50 Unit Opener
52 Vocabulary
58 Unit Review
62 Remember?
64 Cooldown Section
Unit 4 生命科學（二）──先有蛹還是先有蝴蝶？
Life Science Two
66 U...