理科王問答比賽

理科王問答比賽

6th - 8th Grade

20 Qs

quiz-placeholder

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理科王問答比賽

理科王問答比賽

Assessment

Quiz

Physics

6th - 8th Grade

Medium

Created by

SI CHING WONG

Used 20+ times

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Media Image
以下哪一項是力的單位? Which of the following is the unit of force?
千克 (kg)
米 (m)
牛頓 (N)
焦耳 (J)

Answer explanation

牛頓是國際單位制中力的單位,定義為使一千克的物體加速一米每秒平方所需的力。

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Media Image
以下哪個是能量守恆定律的主要內容? What is the main content of the law of conservation of energy?
能量可以創造 (Energy can be created)
能量無法轉換 (Energy cannot be transformed)
能量可以被摧毀 (Energy can be destroyed)
能量不會消失,只會轉換 (Energy cannot be destroyed, only transformed)

Answer explanation

能量守恆定律表明,能量在一個封閉系統中不會增加或減少,只會從一種形式轉換為另一種形式。

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Media Image
甚麼是摩擦力? What is frictional force?
物體在空氣中運動時的阻力 (Resistance to motion of an object in air)
物體接觸面之間的阻力 (Resistance between surfaces in contact)
物體在水中運動時的阻力 (Resistance to motion of an object in water)
物體重力的影響 (Effect of gravitational force on an object)

Answer explanation

摩擦力是物體接觸表面之間的相互作用力,阻止物體相對於接觸面移動。

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Media Image
水的化學式是什麼? What is the chemical formula for water?
H₂

HO₂

H₂O

OH₂

Answer explanation

水由兩個氫原子和一個氧原子組成,因此它的化學式是 H₂O。

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

下列哪一項是純物質? Which of the following is a pure substance?
空氣 (Air)
鉛 (Lead)
海水 (Sea Water)
煤氣 (Natural Gas)

Answer explanation

鉛是一種單一元素的純物質,而空氣和海水是混合物,煤氣通常是由多種氣體組成。

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Media Image
元素的最小單位是什麼? What is the smallest unit of an element? What is frictional force?
分子 (Molecule)
原子 (Atom)
離子 (Ion)

電子(Electron)

Answer explanation

原子是元素的基本單位,具有該元素的所有化學性質。

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Media Image
人體中最大的器官是什麼? What is the largest organ in the human body? How does kinetic energy change when the speed of an object increases?

肺(Lung)

肝臟 (Liver)
皮膚 (Skin)
腦 (Brain)

Answer explanation

皮膚是人體最大的器官,負責保護內部結構和調節體溫。

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