Perihelion

Open Ended

How would you describe the orbits of the planets in our solar system?

Draw

Label the diagram with: p and a

p for perihelion

a for aphelion

Open Ended

What did you notice about the exccentricities?

​21.  Elijah Phifer

​21.  Elijah Phifer

​21.  Elijah Phifer

Open Ended

What may cause a planet to increase speed when closer to the Sun?

Multiple Choice

Pick a planet that has a year that is longer than Earth's.

• Mercury

• Venus

• Jupiter

Multiple Choice

Pick a planet that has a year that is shorter than Earth's.

• Mars

• Neptune

• Venus

• Jupiter

Multiple Choice

All 8 planets orbit around the sun in an elliptical shape.

• True

• False

Multiple Choice

Each planet travels the same constant speed in its orbit at all times

• True

• False

Multiple Choice

A planet's distance from the sun does not impact its length of year.

• True

• False

Multiple Choice

A planet farther from the Sun has a more elliptical shaped orbit.

• True

• False

Multiple Choice

At a planets perihelion, it travels fastest in its orbit.

• True

• False

Multiple Choice

Planets that are closer to the Sun have a shorter planetary year.

• True

• False

Categorize

Options (9)

The speed of a planet in its orbit varies.

Aphelion is a point in a planet's orbit when its farthest from the sun.

Perihelion is a point in a planet's orbit when its closet to the sun.

A planet ravels faster in its orbit when it is closer to the sun.

A planet will travel slowest at its aphelion.

Mercury takes a shorter time period to orbit the sun because it is the closest.

An outer planet will have a longer orbital revolution around the sun.

A planet’s orbit around the Sun is an elliptical shape.

A planet’s orbital period depends on its distance from the sun. 

Sort the characteristics of the 3 Laws of Kepler.

Law 1

Law 2

Law 3