S1 W2 Astronomy FC Angular distance, Kepler's 3 laws, parallax

Instructions

vocab

1

Skim the rest of chapter 1 in your book. you only need to read the "extending our reach" and part 1.3 carefully, for the rest, just note any bolded vocab. Note any question you would like discussed in class here.

1

Note anything you found particularly interesting here.

1

match vocabulary to definition

Draggable item		Corresponding Item
semi-major axis		a regular oval shape, traced by a point moving in a plane so that the sum of its distances from two other points (the foci) is constant
ellipse		finding the angle between the line of site from one side of an object to another
angular size		the distance from the center of an ellipse to furthest point
astronomical unit		the average distance from the earth to the sun
period		the time interval of a repeating cycle

1

Astronomy relies on angular size, but angular size is relative. This means

1

A set of points on a plane defined by all points a constant distance from one central point

1

A set of points on a plane defined by a constant sum of distances from two focus points

1

In the equation
what do p and a stand for?

1

Why did all the astronomers before Kepler assume all orbits would be circular?

1

hold your hand at arm's length away from your face. look with both eyes, and then alternate looking at your hand with just your right eye and just your left eye. The difference between what you see with just your left eye and just your right eye is an example of

1

John wrote Kepler's third law as
Jane had written it as
The teacher

5

Choose all (NOT JUST ONE) reason that Copernicus's theory of heliocentrism was rejected by his contemporaries.

1

the circular shape of the Earth's shadow on the moon led early astronomers to conclude that

1

Keplers first law states that planets move in elliptical orbits and that the sun is one focus of the ellipse. What do you think is at the other focus

1

Kepler's second law

1

If Saturn is on average 9x farther from the sun than the earth is, how long is its year in terms of earth years?
Honors: you should be able to do this without the hint.

1

Honors: The great galaxy Andromeda has an angular diameter of about 5°. Its distance is about 2.2 x10^6 light years. How many light years long is Andromeda's diameter? Give your answer in scientific notation.

1

Given two objects orbiting a star, and considering the equation p^2=a^3, the object with the larger semi-major axis would

1

A planet is discovered orbiting a nearby star once every 125 years. If the star is identical to the sun, consider how you can you find the planet's distance from the sun? Assume the orbit is more or less circular and calculate the distance from the planet to the star in AUs.

1

Explain why this calculation wouldn't work if the star in the question above was significantly smaller or larger than our sun.

1

write 2.034 x 10^6 in standard notation

1

write 0.0014 in scientific notation

1

rewrite 143,000,000 in scientific notation

1

How are you feeling about the topics this week?

scientific notation for big numbers
scientific notation for small numbers
converting from scientific notation to standard form
converting from standard form to scientific notation
what is angular size
how to measure angular size
what it means for an orbit to be elliptical
the relationship between the size of an object, the distance from the object and the time it takes to orbit that object
why planets move faster when they are closer to the sun

I've got this
i'm fuzzy
I am so confused

Skim the rest of chapter 1 in your book. you only need to read the "extending our reach" and part 1.3 carefully, for the rest, just note any bolded vocab. Note any question you would like discussed in class here.

Note anything you found particularly interesting here.

match vocabulary to definition

Astronomy relies on angular size, but angular size is relative. This means

A set of points on a plane defined by all points a constant distance from one central point

A set of points on a plane defined by a constant sum of distances from two focus points

In the equation what do p and a stand for?

Why did all the astronomers before Kepler assume all orbits would be circular?

hold your hand at arm's length away from your face. look with both eyes, and then alternate looking at your hand with just your right eye and just your left eye. The difference between what you see with just your left eye and just your right eye is an example of

John wrote Kepler's third law asJane had written it as The teacher

Choose all (NOT JUST ONE) reason that Copernicus's theory of heliocentrism was rejected by his contemporaries.

the circular shape of the Earth's shadow on the moon led early astronomers to conclude that

Keplers first law states that planets move in elliptical orbits and that the sun is one focus of the ellipse. What do you think is at the other focus

Kepler's second law

If Saturn is on average 9x farther from the sun than the earth is, how long is its year in terms of earth years?Honors: you should be able to do this without the hint.

Honors: The great galaxy Andromeda has an angular diameter of about 5°. Its distance is about 2.2 x10^6 light years. How many light years long is Andromeda's diameter? Give your answer in scientific notation.

Given two objects orbiting a star, and considering the equation p^2=a^3, the object with the larger semi-major axis would

A planet is discovered orbiting a nearby star once every 125 years. If the star is identical to the sun, consider how you can you find the planet's distance from the sun? Assume the orbit is more or less circular and calculate the distance from the planet to the star in AUs.

Explain why this calculation wouldn't work if the star in the question above was significantly smaller or larger than our sun.

write 2.034 x 10^6 in standard notation

write 0.0014 in scientific notation

rewrite 143,000,000 in scientific notation

How are you feeling about the topics this week?

In the equation
what do p and a stand for?

John wrote Kepler's third law as
Jane had written it as
The teacher

If Saturn is on average 9x farther from the sun than the earth is, how long is its year in terms of earth years?
Honors: you should be able to do this without the hint.