Answer:
The answer is Groundwater
Explanation:
c. Modern view
b. Earth-centered
d. all of the above are solar system models
Correct answer choice:
B. Earth-centered
Explanation:
Heliocentric theory is the planetary model in which the Earth and planets rotate around the Sun at the focus of the Solar System. Historically, Heliocentric theory was objected to geocentric theory, which set the Earth at the core. This approach was explained in sections by several cosmologists over various times, particularly Aristarchus, Copernicus, Kepler, and Galileo.
Answer:
The correct answer is option b, Earth centered
Explanation:
For the very first it was proposed by Copernicus that it is not the earth but sun which lies at the center of the system and rest all planets revolve around the sun. This sun centered model is known as heliocentric system and is also referred to as the modern view. This model was also helpful in solving two major queries instantly –
a) Varying brightness of planets
b) Retrograde motion.
B. A feather will fall slower than a bowling ball.
C. A feather and a bowling ball will fall at the same rate.
D. Both a feather and a bowling ball can't fall, but will always remain motionless.
Answer:
In a simple telescope two lenses are used, objective lens and eyepiece lens. A parallel beam of light is focused by the objective lens of a telescope and then light passes through an eyepiece forming a magnified image. Above diagram shows the ray diagram of an astronomical telescope.
Answer:
Measures a slower course of time
Explanation:
According to the theory of relativity, there is a difference in the time measured by two observers, due to a relative speed difference between them. In other words, you observe that a clock that moves with respect to you will measure a slower course of time than a clock that is at rest in your frame of reference.