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What is scieantific notation?
Scientific Notation is a way of representing really large or really small numbers without having to physically draw each of the numbers. It is used in science related things alot since it is easier and creates less errors in identifying big numbers.
Are there numbers before 0?
Yes. They might be easier to recognize if you think of them as numbers below zero.They're called 'negative' numbers.
Why is 1000 million called 1 billion?
So that it's easier to be referred to. People will also not make mistakes due to there being too many zeros. E.g. 100000000000 can be called 100 billion instead of 100000 million.
How do you remember math easier?
One way to remember math easier is by practicing. The more you do something the more inclined you will learn it and it will be easier in the future.
Why is it easier to measure the angle of incidence an the angle of reflection n a flat surface?
When talking about reflection (normally with light), one works out the angle of incidence and the angle of reflection by drawing a line that is perpendicular (90 degrees) to the reflector and measuring the angle between this line and the ray of incidence/reflection. This line is called the normal line. It is easier to measure the angles of incidence and reflection on a flat surface, because it is easier to draw an accurate normal line.
