Question 1

What best describes Earth's hierarchy in space?

Accepted Answer

Earth, solar system, galaxy, local group, supercluster, universe

Answer

Earth, solar system, local group, supercluster, red shift, universe

Answer

Solar system, galaxy, local group, cluster, universe

Answer

Earth, galaxy, group, universe

Question 2

Kepler's first law says that

Accepted Answer

all planets travel around the sun in elliptical orbits

Answer

The square of the period of any planet is proportional to the cube of the semimajor axis of its orbit.

Answer

A line that connects a planet to the sun sweeps out equal areas in equal times.

Question 3

Kepler's second law states

Accepted Answer

A line that connects a planet to the sun sweeps out equal areas in equal times.

Answer

All planets move in elliptical orbits, with the sun at one focus.

Answer

The square of the period of any planet is proportional to the cube of the semimajor axis of its orbit.

Question 4

Kepler's third law states

Accepted Answer

The square of the period of any planet is proportional to the cube of the semimajor axis of its orbit.

Answer

All planets move in elliptical orbits, with the sun at one focus.

Answer

A line that connects a planet to the sun sweeps out equal areas in equal times.

Question 5

Precession is

Accepted Answer

a change in direction of Earth's axis without a change in tilt which causes us to see a different north star in the sky

Answer

caused by the gravitational pull of neptune, uranus, saturn, and jupiter

Answer

the center of mass between two objects

Answer

slightly affects the seasons because there is a change in tilt of 18 degrees.

Question 6

Nutation is

Accepted Answer

a change in angle of Earth's tilt of around 1/2 degree, caused by the moon, affects seasons slightly, occurs every 18 years

Answer

the center of mass between two objects, and the sun orbits it

Answer

a change in the direction of Earth's axis without a change in tilt which causes us to see a different north star in the sky

Question 7

The barycenter is

Accepted Answer

The center of mass of two or more bodies that are orbiting each other, or the point around which they both orbit.  The sun orbits this.

Answer

a change in angle of Earth's tilt of around 1/2 degree, caused by the moon, affects seasons slightly, occurs every 18 years.

Answer

change in direction of Earth's axis so that we will see a new north star, occurs every 26,000 years.

Question 8

Which of the following statements is true?

Accepted Answer

Earth revolves around the sun and rotates on its axis

Answer

Earth revolves on its axis and rotates around the sun

Answer

the moon rotates around Earth, and Earth rotates around the sun

Answer

the moon revolves around the sun, and the Earth rotates around the moon.

Question 9

What is the cause of seasons?

Accepted Answer

The tilt of EArth's axis as it revolves around the sun

Answer

the interaction between the Earth, sun, and moon.

Answer

the rotation of Earth on its axis

Answer

the revolution of Earth around the sun

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