Boosting Your Intelligence! Directions: Fill in the blanks. If the activity is a question answer with a complete sentence. 1. Light waves radiate in ali directions from their source 2. Light waves can be described as behave like or from a point of radiating from a light source or from a point of reflection because they also 3. State the law of reflection. 4. If light ray strikes a flat surface at an angle of 360, its angle of reflection is 5. If a light ray a has an angle of reflection of 520, its angle of is also 520. from a completely 6. Regular reflection is the reflection of all light rays at the same surface. 7. Diffused reflection is the spreading out in all of waves reflected at various from an surface. 8. A flat mirror reflects an image from the point of view of someone or the glass. 9. Why are convex mirrors often placed at corners? of the mirror, not it like a virtual image. 10.The image of a concave mirror is focused in 11.The change in of light as it passes from one medium into another causes light to 12.Light reenters the air and is 13.Light passes into the water, speeds up, and 14.The pencil appears bent because the light reflecting from the outward. inwards. under the water reaches your eyes at a different above the water. than the light reflecting from the occurs when light is refracted upward and makes water or other objects seem to appear where they are 15.A not.
Stellar evolution
We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.
Red Shift
It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.
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