Answer:
Tides are the rise and fall of sea levels caused by the combined effects of gravitational forces exerted by the Moon and the Sun, plus the rotation of the Earth. Tides are caused by the gravitational pull of the moon and sun. High and Low tides are caused by the moon. Spring tides occur twice each lunar month all year long without regard to the season. Neap tides, which also occur twice a month, happen when the sun and moon are at right angles to each other.
Explanation:
Hope this helped! :D
Answer:
option c
Explanation:
as catalyst increases the reaction while activation energy is inversely proportional to rate of reaction, so option c is correct
Answer:
Theory
Explanation:
A proved hypothesis usually becomes known as a theory.
Let's take an example. Remember the experiment for the Newton's law of universal gravitation. In an experiment like this, we should have a reference point, a hypothesis. The thought process would be, for example, to intuitively propose that the force of gravity depends on the masses of the two objects and the distance between them.
As a second step, sufficiently high number of experiments should be performed to prove this relationship with different masses and different distances to see how force correlates with the given variables.
Having noticed that the two masses are directly proportional to force and that force is inversely proportional to the square of a distance between the two objects, a proportionality constant is also found, so then we have an equation which would help us solve for the force of gravity between any two objects knowing their masses and the distance between them.
Overtime, after this hypothesis is proved analyzing substantial data, it becomes an accepted theory that can be used and applied.
Answer:
Xenon is less reactive.
Explanation:
Xenon is a noble gas with 8 valence electrons whereas bromine is a halogen with 7 and is very reactive.