What are the two types of physical quantities?

Fundamental quantities and derived quantities.

Which of the following is a derived quantity? A) Mass B) Length C) Speed D) Temperature

C) Speed

Fill-in-the-blank: A unit is a fixed quantity used as a standard to measure ______.

Physical quantities

True or False: The SI unit of mass is gram (g).

False. The SI unit of mass is kilogram (kg).

Riddle: I am measured in meters, and I can be long or short, but I am always the distance between two ends. What am I?

Length

What is the SI unit of temperature?

Kelvin (K)

Which of the following is NOT a standard unit system? A) CGS B) FPS C) MKS D) TKS

D) TKS

Fill-in-the-blank: The formula for expressing a physical quantity is P = N × ______.

U

True or False: Non-standard units of measurement are reliable and consistent across different people.

False. Non-standard units are not reliable because they vary from person to person.

Riddle: I can measure time with great precision, I can be digital or analog, and I often have hands that move. What am I?

A clock

What is the relationship between the freezing point of water in Kelvin and Celsius?

K = °C + 273

Fill-in-the-blank: The amount of matter in an object is known as its ______.

Mass

Which instrument is commonly used to measure length accurately?

Vernier callipers

True or False: A clinical thermometer is used to measure the temperature of objects, not the human body.

False. A clinical thermometer is specifically used to measure the body temperature of humans.

Riddle: I am often found in laboratories, can measure up to 110°C, and have no kink in my tube. What am I?

Laboratory thermometer

What is the unit used for measuring area in SI units?

Square meter (m²)

Which unit is used for measuring very large distances, such as between planets?

Astronomical units (A.U.)

Fill-in-the-blank: The smallest marking on a ruler is ______.

One millimetre (mm)

True or False: The pendulum clock uses an electronic mechanism to keep time.

False. A pendulum clock uses a swinging pendulum to keep time.

Riddle: I am a device that expands and contracts with temperature changes, often containing mercury or alcohol. What am I?

A thermometer