Define ceramic and nano-ceramic materials. Why the nano-ceramics show better properties than their ceramic counterparts? Write the applications of ceramic materials
Explanation
NOTE: The question has 4 parts each part of the question contains 5 marks
(part a) Define ceramic and nano-ceramic materials. Why the nano-ceramics show better properties than their ceramic counterparts? Write the applications of ceramic materials.
(part b)What is ‘Black Hole’? How black holes are formed and discovered? (5)
Black Hole:
A black hole is a region in space with a gravitational pull so strong that nothing, not even light, can escape from it.
Formation and Discovery:
They were first theorized by Albert Einstein's general theory of relativity a
(part c)Write two applications of each of the following electromagnetic radiations:
(i) Ultraviolet: 1. Sterilization: 2. Tanning:
(ii) Infra-red: 1. Thermal Imaging: 2. Heating:
(iii) Microwaves: 1. Cooking: 2. Satellite Communication:
(iv) Radio waves 1. Broadcasting: 2. Wireless Communication:
(v) X-rays. 1. Medical Imaging: 2. Security:
(part d)What is Wildfire? Explain its types, causes, spread, and preventions.
Wildfire:
A wildfire is an uncontrolled fire that spreads rapidly across vegetation, often in forested areas, fueled by dry conditions, strong winds, and flammable materials.
Types of Wildfire:
- Ground Fires:
- Surface Fires:
- Crown Fires:
Causes of Wildfire:
Wildfires are caused by natural factors like lightning and human activities such as unattended campfires, discarded cigarettes, or arson.
Wildfires spread
Preventions of Wildfire:
