Origin of Modern Astronomy START EXIT Funded by Title V HIS Grant at LAMC and U.S Department of Education Corresponds to Ch 3 in book Astro by Seeds Prepared by: Julissa Garcia, Aramik Yousefian Hagop Hadjinian, Tatevik Grigoryan Activity director: Lilit Haroyan Faculty Advisor: Richard Rains

1. What does Copernicus Heliocentric Universe Model state? HINT Ptolemy is the center of the universe Ptolemy is the center of the universe Everything revolves around the Earth Everything revolves around the Earth The Sun is in the center of the universe The Sun is in the center of the universe Everything revolves around the Sun Everything revolves around the Sun Exit

HINT Ptolemy is the center of the universe Everything revolves around the Earth The Sun is in the center of the universe Everything revolves around the Sun Correct! next 1. What does Copernicus Heliocentric Universe Model state? Exit

1. What does Copernicus Heliocentric Universe Model state? Incorrect Helio has ties to the word Sun in Greek mythology and therefore implies that the heliocentric system has the sun in the center and planets rotate it. back next HINT Exit

Helio…reminds me of… back Exit

2. Ptolemy s Geocentric Model states: HINT The Earth is next to a star cluster The Earth is next to a star cluster Everything revolves around the Earth Everything revolves around the Earth Earthlings are perfect Everything revolves around the Sun Everything revolves around the Sun Exit

HINT The Earth is next to a star cluster The Earth is next to a star cluster Everything revolves around the Earth Everything revolves around the Earth Earthlings are perfect Everything revolves around the Sun Everything revolves around the Sun 2. Ptolemy s Geocentric Model states: Correct! next Exit

2. Ptolemy s Geocentric Model states: Incorrect Geocentric implies that everything centers the Earth. back next HINT Exit

Geography is the study of the Earth back Exit

3. Which is Keplers second law? HINT Equal areas in equal times Equal areas in equal times Joan Keplers favorite song Joan Keplers favorite song F=ma All planetary orbits are elliptical All planetary orbits are elliptical Exit

HINT Equal areas in equal times Equal areas in equal times Joan Keplers favorite song Joan Keplers favorite song F=ma All planetary orbits are elliptical All planetary orbits are elliptical Correct! next 3. Which is Keplers second law? ? Exit

back next 3. Which is Keplers second law? ? Incorrect In our orbit sometimes we are closer to the sun and in some cases we are further, regardless of our distance the area in these angles will always be the same. backnext Exit

It involves an orbit in different times back Exit

4. How did Ptolemy explain retrograde motion? HINT 80s Retro music Planets moving in loops out of orbit Planets moving in loops out of orbit Planets moving in epicycles of forward and backward loops Planets moving in epicycles of forward and backward loops A Planets orbit is faster and passes anothers A Planets orbit is faster and passes anothers Exit

HINT 80s Retro music Planets moving in loops out of orbit Planets moving in epicycles of forward and backward loops A Planets orbit is faster and passes anothers Correct! next 4. How did Ptolemy explain retrograde motion? Exit

4. How did Ptolemy explain retrograde motion? Incorrect Retrograde motion (which was deemed inaccurate) is described as planets moving in loops forward and backward. It was used to describe the fact that since other planets have larger orbits the inner planets pass then up and create the Freeway illusion of a planet receding. back next HINT Exit

It was an incorrect conclusions and seemed silly back Exit

5. Which is Newtons Third law of Motion? HINT Equal areas in equal times Equal areas in equal times Every action has an equal and opposite reaction Every action has an equal and opposite reaction F=ma A body remains at rest until acted upon A body remains at rest until acted upon Exit

HINT Equal areas in equal times Every action has an equal and opposite reaction F=ma A body remains at rest until acted upon 5. Which is Newtons Third law of Motion? Correct! next Exit

5. Which is Newtons Third law of Motion? Incorrect Newtons 3 rd law refers to actions having equal and opposite reactions, just like when two objects that collide and break apart. back next HINT Exit

Two kittens collide and break apart... back Exit

6. Which is Keplers first law? HINT Equal areas in equal times Equal areas in equal times Joan Keplers favorite song Joan Keplers favorite song F=ma All planetary orbits are elliptical All planetary orbits are elliptical Exit

HINT Equal areas in equal times Joan Keplers favorite song F=ma All planetary orbits are elliptical Correct! next 6. Which is Keplers first law? Exit

Incorrect All orbits are elliptical, not circles. back next 6. Which is Keplers first law? HINT Exit

back Shapes similar to circles Exit

7. What is mass? HINT Gravitational force on objects Gravitational force on objects Length of an object Weight of an object Matter in an object Exit

HINT Gravitational force on objects Length of an object Weight of an object Matter in an object Correct! next 7. What is mass? Exit

Incorrect Mass does not change, it is the matter inside an object, not the weight. back next 7. What is mass? HINT Exit

Mass does not change regardless where you are. back Exit

8. A body remains at rest until acted upon refers to which of Newtons law? HINT 2 nd law 2 nd law 3 rd law 3 rd law 17 th law 17 th law 1 st law 1 st law Exit

HINT 2 nd law 3 rd law 17 th law 1 st law Correct! next 8. A body remains at rest until acted upon refers to which of Newtons law? Exit

8. A body remains at rest until acted upon refers to which of Newtons law? Incorrect Newtons 1 st law relates to Inertia, when you just sit around not doing anything, until you act. back next HINT Exit

Newton only has 3 laws back Exit

HINT Mars moons were rough and uneven Mars moons were rough and uneven Jupiters moon was rough and uneven Jupiters moon was rough and uneven Earths moon was rough and uneven Earths moon was rough and uneven Venus moon was rough and uneven Venus moon was rough and uneven 9. Which is one Galileos observation showed our moon not to be special? Exit

9. Which is one Galileos observation showed our moon not to be special? HINT Mars moons were rough and uneven Jupiters moon was rough and uneven Earths moon was rough and uneven Venus moon was rough and uneven Correct! next Exit

9. Which is one Galileos observation showed our moon not to be special? Incorrect Galileo saw that the moon was not perfect and hence we were not either and definitely no the center of the universe. back next HINT Exit

The moon itself is not perfect… back Exit

10. Lunar Gravity acts on…. HINT The Earth The Earth and its oceans Wolves Earths mammals Exit

HINT The Earth The Earth and its oceans Wolves Earths mammals Correct! next 10. Lunar Gravity acts on… Exit

10. Lunar Gravity acts on…. Incorrect The moon has such a strong gravitational pull on Earths ocean as it orbits, as well as Earth itself (Earths tidal budges on each side). back next HINT Exit

The object the moon rotates back Exit

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