VI Define:
1. Appearance
4. Opaque objects
3. Evaporation
2. Circular motion
5. Physical change
Answers
Answer:
. What is a fibre? 5. Name any 3 things that can be made from jute fibre. 6. ... The glowing of Electric bulb is a physical change. 2. ... Circular and rotatory motion. 5. ... Which of the following is not a translucent object?
Answer:
1. the state, condition, manner, or style in which a person or object appears; outward look or aspect: a table of antique appearance; a man of noble appearance. outward show or seeming; semblance: to avoid the appearance of coveting an honor.
2. circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. It can be uniform, with constant angular rate of rotation and constant speed, or non-uniform with a changing rate of rotation.
3. Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase. The surrounding gas must not be saturated with the evaporating substance. When the molecules of the liquid collide, they transfer energy to each other based on how they collide with each other.
4. Opaque objects block light from traveling through them. Most of the light is either reflected by the object or absorbed and converted to thermal energy. Materials such as wood, stone, and metals are opaque to visible light. Materials.
5. Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.
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