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Kelper's Laws: Test Your Knowledge

Total questions: 11

Worksheet time: 4mins

Name
Class
Date
1.

An ellipse, the orbit of a planet, with the sun at 1 focus.

a)

Kelper's 2nd Law

b)

Kelper's 1st Law

c)

Kepler's 3rd Law

d)

Orbital Period

2.

What equation was used to determine Mercury's eccentricity?

a)

(T^2/R^3)

b)

E=F/D

c)

8.99x10^9

3.

Kelper's 2nd Law

a)

the area of a planet sweeps in orbit will be the same for any two equal time periods

b)

the square of the orbital period of a planet is proportional ti the cub of the semi-major axis of the orbit

c)

the orbit of a planet is an ellipse with the sun at 1 focus

4.

When the planet is closer to the sun..

a)

the less time & distance it takes to travel

b)

the more time & less distance it takes to travel

c)

the more time & distance it takes to travel

d)

the less time & more distance it takes to travel

5.

the square of the orbital period of a planet is proportional to the cube of the semi-major axis of the orbit

a)

Kelper's 2nd Law

b)

Kelper's 1st Law

c)

Kelper's 3rd Law

d)

Ellipse

6.

What is used to estimate the orbital period?

a)

Kelper's 3rd Law (AU)

b)

E=F/D

c)

F=G m^1m^2/d^2

7.

Where is the minor axis?

a)

the longest width/axis of an ellipse

b)

one half of the major axis

c)

the shortest width/axis of an ellipse

8.

Define Ellipse

a)

the ratio of the square of a planet's orbital period

b)

planets that orbit around the sun

c)

an oval with two foci where the sum of the distance from a point on its edge to the foci is constant

d)

a star

9.

Ellipse's measure is called..

a)

the major axis

b)

eccentricity

c)

distance

10.

What does this picture represent as an example for? (Hint: New Vocab used in the lessons)

a)

Year

b)

The Orbital Period

c)

An Ellipse

d)

An orbit

11.

What is Pluto a great example for?

a)

Kelper's 1st Law because of its eccentricity.

b)

Kelper's 3rd Law because of its orbital period

c)

Kelper's 2nd Law because of Pluto's distance.

d)

All of the above