I need help on 2 questions on my science homework.?

Question

1. Describe a well known hypothesis that was discarded because it was found to be untrue.

2. Describe a scientific theory that is currently accepted as true.

Answer 1

1. Earth is flat
obviously, this was proven wrong

2. You can not go faster than speed of light
current theory prevents going faster than speed of light, or, actually matching the speed.

Answer 2

1. Ether. People used to believe that all waves must travel through some kind of a medium, like sound waves through air or ocean waves through water. Since light is a wave, they thought it traveled through a medium they called the Ether. Look up "Luminiferous Ether" on Wikipedia.
2. That light energy is not only a wave but also a particle. This helped to explain the discontinous emmission spectrum of certain elements. and also led to the development of "quantum physics." Prior to this development scientists were confused because what they saw in the real world didn't fully match up with what they expected to happen if light were only treated purely as a wave.

You could also go watch mythbusters, they've got lots of cool hypotheses. Like a bull in a china shop is more graceful than you would think!!

Answer 3

1. The 5 second rule... we used it when we where kids... drop a piece of bread... 5 second rule "hypothesis" says there are no germs on it since it has been only 5 seconds... any longer.... then it cannot be eaten. This was found to be not true by the show "mythbusters" on discovery channel. The piece of bread they dropped for 5 second and the piece of bread dropped for 20 seconds. Still had bacteria on them. That was a hypothesis that was thought to be true... but really is not.

2. The big bang theory... the theory that our universe was created with a huge explosion.

Answer 4

1. The sun and planets revolve around the Earth ( PROVEN WRONG)

2. All living things are made up of cells

Answer 5

For the first one try looking up la mark

for the second look up the big bang.

Answer 6

1. inheritance of acquired traits
2. gravity