Midterm Review: U1 Astronomy

A planet is discovered to orbit a star.

Using Kepler's 1st Law, describe this orbit.

• the orbit is circular with the star in the center

• the orbit is a triangle with the star at the edge

• the orbit is a square with the star at the corner

• the orbit is elliptical with the star at the focus

Tags

NGSS.MS-ESS1-2

This image shows a planets orbit around the Sun. The gray areas are EQUAL.

According to Kepler's 2nd Law, what is TRUE?

• the planet is moving fastest from A to B (because it is near the Sun)

• the planet is not moving

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Star A has a mass of 70,000kg.

Star B has a mass of 78,000kg.

Where would the barycenter be located?

HINT: The barycenter is CLOSER to the BIGGER object!

• closer to Star A;

  because Star A has a greater mass

• closer to Star B;

  because Star B has a greater mass

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

In the year 14,000, Earth axis will change direction and will point to the star Vega instead of Polaris.

What movement BEST describes this?

• rotation

• revolution

• precession

• nutation

Tags

NGSS.MS-ESS1-1

Why does Earth have seasons?

• Earth's rotation

• Earth's size

• Earth's tilt

• Earth's color

Tags

NGSS.MS-ESS1-1

What would happen if Earth's axis was NOT tilted?

• the entire Earth would experience the same season at all times

• seasons would switch back and forth every 6 months randomly

Tags

NGSS.MS-ESS1-1

Earth rotates on it's axis.

How long does this action take?

• 1 minute

• 24 hours

• 12 days

• 1 year

If the Northern Hemisphere is in Summer, the Southern Hemisphere is in Winter.

Why are these seasons opposite?

• the seasons like opposite day

• the Earth is tilted, so each hemisphere is heated unevenly

• there are more clouds in the Southern Hemisphere

• this is not true

Tags

NGSS.MS-ESS1-1

How do stars, like the Sun, produce energy?

• atoms go through fusion

• atoms go through fission

• atoms use the oven to heat up food

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

What is Earth's primary source of electromagnetic energy?

• batteries

• the moon

• the Sun

• the ocean

Tags

NGSS.MS-ESS2-4