Orbital Motions (12th grade astro)

As mass increases, gravity ________________.

• Increases 
• Decreases 
• Stays the same 

Tags

NGSS.MS-PS2-4

Based on the table, which planet in our solar system will have the fastest orbital speed?

• Venus

• Earth

• Saturn

• Mercury

Tags

NGSS.MS-PS3-1

What relationship did Kepler discover about planets and their orbital speed?

• Planets closest to the Sun will orbit with the fastest orbital speed.

• Planets with the greatest mass will orbit the Sun with the fastest orbital speed.

• Planets furthest from the Sun will orbit with the fastest orbital speed.

• Planets with the least mass will orbit the Sun with the fastest orbital speed.

According to Kepler’s discoveries, planets orbit around the Sun:

• in a figure 8.

• in perfect circles.

• in an ellipse.

• in a rectangular shape.

Tags

NGSS.MS-ESS1-2

In simplest terms, what does Kepler's 3rd law state?

• Planets take multiple years to complete an orbit around the Sun.

• There is no relationship between the distance of planet and the time it takes to orbit the Sun.

• There is a mathematical relationship between the distance of a planet and the time it takes to orbit the Sun.

• All planets in every solar system have the same orbital period.

Tags

NGSS.HS-ESS1-4

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.

The orbital path of a satellite is shown in the sketch. Use the sketch to answer the question.

In which of the positions A through D does the satellite have the least speed ?

• A

• B

• C

• D

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS3-1

A planet moves __________ when it is farthest from the Sun.

• faster

• slower

Tags

NGSS.MS-PS3-1

Where is the planet moving fastest?

• Position A to B

• Position B to C

• Position H to I

• Position I to J

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS3-1

An ellipse is drawn around two points called

• aphelion
• perihelion
• foci
• axis