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23 Cards in this Set

  • Front
  • Back

We see the explosion of star Laverne that is 10 light years away. Five years later we see the explosion of a star Shirley that is 20 light years away.Which star actually exploded first?

A. Laverne


B. Shirley


C. Both exploded at the same time


D. We don’t have enough information to determine this.

Star X goes supernova 20 years ago and we just see the supernova today. Star Y goes supernova at the same time but we see the explosion 10 years before that from Star X.How many light years away from us is star Y?

A. 1


B. 5


C. 10


D. 15


E. impossible to tell from the information given.

Where on earth could you stand and be stationary with respect to the center of the earth?

A. The equator


B. The north Pole


C. Lawrence


D. None of the above

Where on earth could you stand and be stationary with respect to the sun?

A. The equator


B. The north Pole


C. Lawrence


D. The south pole


E. None of the above

At which point on the earth are you moving quickest through space?

A. The equator at noon


B. The equator at midnight


C. The north pole at noon


D. The south pole at midnight


E. You are moving at thesame speed at all of thesepositions.

Which of the following statements best describes why stars appear to move over the course of one day?

A. The earth is moving around the sun


B. The stars are rapidly moving through the sky C. The earth is rotating about its axis


D. The sun is moving through the galaxy


E. None of these are good reasons.

How long does it take to complete the full cycle of Moon Phases?

A. About a day


B. About a week


C. About a month


D. About a year


E. None of the above

According to the Copernican model of the solar system, what causes the retrograde motion of Mars?

A) Mars physically moves backwards through the heavens


B) The Earth overtakes Mars in their orbital paths


C) Mars overtakes The Earth in their orbital paths


D) Retrograde motion does not exist


E) none of the above

What was the earliest model of the solar system?

The planets moved on Spheres inperfect circular motion

What is a physical law?

A statement that describes something that happens innature.

If the semi-major axis is twice thesemi-minor axis, what is theeccentricity, e, of the orbit?

A. e=1.0


B. e=0.25


C. e=0.5


D. e=0.0


E. none of the above

The speed of a planet around thesun is constant for which of thefollowing orbital eccentricities?

A. e=0.3


B. e=0.6


C. e=0.0


D. None of the above


E. All of the above

The planet in the orbit shown below
obeys Kepler’s Laws.
D
A B
C
5
3
1
2
6
8
4
During how many portions of the planet’s orbit (A, B, C and D)
would the planet be speeding up the entire time?

The planet in the orbit shown belowobeys Kepler’s Laws.DA BC5312684During how many portions of the planet’s orbit (A, B, C and D)would the planet be speeding up the entire time?

A) Only during one of the portions shown.


B) During two of the portions shown.


C) During three of the portions shown.


D) During four of the portions shown.


E) None of the above.

Which of the following best describes whatwould happen to a planet’s orbital speed ifits mass were doubled but it stayed at thesame orbital distance?

It would orbit half as fast.


B. It would orbit less that halfas fast.


C. It would orbit twice as fast.


D. It would orbit more thantwice as fast.


E. It would orbit with the samespeed.

If a small weather satellite and the largeInternational Space Station are orbitingEarth at the same altitude above Earth’ssurface, which of the following is true?

A. The large space station hasa longer orbital period.


B. The small weather satellitehas a longer orbital period.


C. They both have the sameorbital period

Speed

How fast an object is moving

Velocity

How fast an object is moving, and in what direction

Acceleration

Change in speed and/or velocity

What causes an object tochange its velocity?

Force- whatever must be applied to makean object accelerate.

Newton's Three Laws of Motion

1. A body remains at rest or moves in astraight line at a constant speed unless acted uponby an outside (net) force.


2. (net) Force = mass x acceleration


3. Whenever one body exerts a force ona second body, the second body exerts an equaland opposite force on the first body

Isaac Newton (1642-1727) was...

1.Polish


2. Danish


3. Italian


4. German


5. Greek


6. British

Isaac Newton (1642-1727) is knownfor

1.First observations of the sun


2.First sun centered scientific model of the solar system or universe


3.Being the world’s best naked-eye astronomer4.Creating first a theoretical model to explain planetary motions


5.Co-creating calculus, advancing the science of optics, creating thefirst theoretical model for explaining gravity and …..

I have two objects, m1 and m2 and m2=2m1.I push on m1 with a constant force F1 and I push on m2with a constant force F2=F1/2, which object will have thehighest velocity after 10 seconds?

A. m1


B. m2


C. Both would have the same velocity after 10 seconds


D. There is not enough information to determine this.