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MCQ Questions for CBSE Class 12 with Answers
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Kepler's Law Class 12 MCQ Questions With Answers
1.
When do planets move the fastest?
Close to the sun
Far away from the sun
2.
What physical property remains constant?
Mass
Weight
Volume
Temperature
3.
Consider the model of Kepler's 2nd Law. Each colored wedge represents the same time interval. Kepler states that the area of each wedge must be equal. According to this, what conclusions can you draw about the movement of any planet?
An orbiting body travels faster as it gets closer to the central massive body.
An orbiting body covers the same distance for each time interval because the speed changes.
4.
Consider the law of gravitational attraction. Two spheres with a mass, M, are attracted to each other by a force, F. If the distance between the two spheres doubles while the masses remain constant, will the force between the two spheres change? If yes, how?
Yes, the forces decreases by 1/16
Yes, the force decreases by 1/4
5.
Kepler’s 3rd law states the square of the orbital period is proportional to the cube of the orbital radius. (T2=r3)If a planet's orbital radius is doubled, what happens to the length of a year on that planet?
It will become twice as long
It will become about 8 times as long
It will remain the same
6.
If an ellipse eccentricity is closer to 0, then it’s more eccentric.
False
7.
Kepler’s first law states that planets travel in a(n) orbit.
Circular
Elliptical
8.
This movement of earth over 11,000 years will change our north star to Vega
nutation
precession
revolution
rotation
9.
The place where a planet is closest to the Sun as it orbits the Sun is called the
perihelion
aphelion
10.
What is true about the area between points A, B and the Sun, and the area between points H, I and the Sun?
The area between A, B and the Sun is the largest.
The area between H, I and the Sun is the largest
Both areas are equal in size
There is not enough information to determine the areas
11.
Earth and the other planets closest to the Sun are made mostly of _______
gas
metal
water
rock
12.
The farther away a planet is from the sun, the _______ it takes it to orbit the sun once.
longer
shorter
13.
An ellipse is drawn around two points called
aphelion
perihelion
foci
axis
14.
A planet moves __________ when it is farthest from the sun.
faster
slower
15.
The "Law of Harmonies" is which of Kepler's Laws?
1st
2nd
3rd
4th
16.
What are the two factors that influence gravity the most?
Mass and weight
Weight and gravity
Mass and distance
Weight and distance
17.
The path a planet travels around the sun is called its
orbit
ellipse
barycenter
precession
18.
In which location would you weight the least?
Venus
Earth
Jupiter
Moon
19.
Weight can best be described as?
The amount of atoms in an object
The gravitational force exerted on an object
The size of an object
The compactness of an object
20.
How can the position of the sun in earth's orbit be described?
The sun is at one of the two focal points of a slightly eccentric ellipse
The sun is at one of the two focal points of a highly eccentric ellipse
21.
Using Newton's law of gravity: F = Gm1m2/d2. G=6.67x10-11 NM2/KG2Calculate the force between two objects that have masses of 70 kilograms and 100 kilograms separated by a distance of 1 meter. Use “G” for the Gravitational constant.
4.66x107
4.66x10-7
22.
The areas swept by an invisible line between the sun an the earth will be
equal if the earth moves for the same amount of time
smaller if the earth moves for the same amount of time
23.
Which statement best describes Kepler’s 2nd Law of Planetary Motion?
Planets revolve around the sun over equal areas in equal time intervals.
A planet’s orbital period is proportionate to its distance from the sun.
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