Answer:

1. You can describe the motion of an object by its position, speed, direction, and acceleration. An object is moving if its position relative to a fixed point is changing. Even things that appear to be at rest move.

2. Music is a sound that produces a pleasing sensation. It is produced by nature, musical instruments, human voice, etc. Noise is an unwanted and unpleasant sound produced by disordered sound such as horns of vehicles, by machines, etc.

3. When sunlight hits a rain droplet, some of the light is reflected. The electromagnetic spectrum is made of light with many different wavelengths, and each is reflected at a different angle. Thus, spectrum is separated, producing a rainbow.

4. The advantages of heat, or geothermal energy, seem to be thus: The energy itself is environmentally friendly due to the source – it’s natural. It’s renewable, much like wind or gravity energy would be. It’s cheaper than most other energy forms to make as well as being more efficient at its job of heating things. It’s smaller than a lot of heaters as well.

5. The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside.

HOPE IT HELPS^^