Astronomy 1205

What do we call the plane which earth orbits the sun

• Celestial Sphere

• Earths rotational path

• Celestial Plane

• Ecliptic Plane

Tags

NGSS.HS-ESS1-4

Edwin Hubble's discoveries (2)

• The further galaxies are moving faster

• Every galaxy is virtually moving away from earth due to expansion

• Created the first geocentric model

• A planet moves faster when closer to the sun, slower when away

Tags

NGSS.HS-ESS1-2

Constellations are:

• Regions of the sky

• The dots (stars) themselves

• not cool

Match the following

• When the moon is closest to earth

• Umbra

• When the moon is furthest from earth

• Apogee

• Moon is fully covered by earths shadow

• Preumbra

• Moon is partially covered by earth shado

• Perigee

Tags

NGSS.HS-ESS1-4

Match the following

• Calculated earth circumference, rotation

• Eratosthenes of Cyrene

• Accurate observations without telescope

• Claudius Ptolemy

• First heliocentric model

• Nicolaus Copernicus

• Made the model of planet epicycles

• Tycho Brahe

• Created model with perfect circle orbits

• Aristarchus of Samos

Organize these options into the right categories

Groups:

(a) Kepler's Laws

,

(b) Newton's Laws

,

(c) Laws of Gravitation

• Every mass attracts other masses through the force of gravity

• Interacting objects apply forces of equal magnitude and opposite direction

• More distant planets orbit the sun at lower speeds

• Planets move faster when perihelion, slower aphelion

• Object will not change its motion unless an outside force acts on it

• Force of an object is equal to mass times acceleration

• Each planet is an orbit with the sun as a focus

• Force of gravity is directly proportional to the product of the two masses

• The strength of the force is inversely proportional to the distance of the two objects

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A planet orbits the sun with a semi-major axis of 3 AU. What is its orbital period in years?

Mathematical Equivalence

OFF

Tags

NGSS.HS-ESS1-4

3. A car with a mass of 1,000 kg is traveling at a velocity of 20 m/s. What is its momentum?

Mathematical Equivalence

ON

Tags

NGSS.HS-PS2-2

Calculate the gravitational potential energy of a 10 kg object that is 5 meters above the ground

Mathematical Equivalence

ON

Tags

NGSS.HS-PS3-1

A rotating disk has a mass of 2 kg and a radius of 0.5 m, spinning at a velocity of 3 m/s. What is its angular momentum?

Mathematical Equivalence

ON