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Physics

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Who &when

TidesBlack holes

Cosmology Problems

Gravitation

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He formulated the universal law of gravitation.

Find out the answer…

Who is Isaac Newton in publishing Principia in 1687. ~ 1700

He made the first measurement of the UniversalGravitation constant.


Who was Henry Cavendish in 1798~1800

He postulated that mass bends space and time in his

General Theory of Relativity..


Who is Albert Einstein in 1916.~ 1900

Either of the two men who accidentally discovered the background

radiation left over from the Big Bang.


Who are Penzias & Wilson in 1965.~ 1950

This is the primary cause of the tides on Earth.


What is the differential pull of the moon on the Earth?

These are extreme tides that occur when theMoon, Earth, and Sun are aligned as in a new moon and

a full moon.


What are Spring tides.

This causes one high tide to be an additional 25 minutes later than

just 12 hours from the previous high tide.


What is the amount of revolution of the moon around the Earth in 12 hours?

The sun exerts a much larger force on the Earth thandoes the moon, but the difference between the force on the

near and far side of the Earth is greater for the Moon than the Sun.


Why does the Moon effect the tidesmuch more than the Sun?

The sphere surrounding a black hole where the escape velocity

equals the speed of light.


What is the event horizon?

This name refers to black holes that could nothave been formed from a star. It is believed they can be

foundat the center of every galaxy, have a mass of billions

of suns and are responsiblefor holding the galaxy together.


What is a super massive black hole?

These are streams of particles shooting out at near the speed of

light and directed as if they were emitted from the center of the

black hole perpendicular to the disk of debris orbiting the black hole.


What are jets?

This is the name given to the material orbiting and spiraling

Around a black hole.


What is an accretion disk?

This term was coined to mock the concept by Hoylewho didn’t believe it was true, but the term stuck and is

nowthe name we give to the theory of the creation of the

universe.


What is the Big Bang?

This phrase describes the fact that galaxies that are far away are moving so fast away from us that their light

appears to have a lower frequency and longer wavelength than

we would normally expect.


What is red shift?

This is the name given to the constant of proportionalitythat relates how far away a galaxy is to its speed relative

tous. This constant is somewhere between

50 and 100 ( km/s ) / (Mega parsec).


What is Hubble’s constant?

This object, discovered in 1974, and namedEinstein’s cross is a great example of this phenomenon.

Daily Double!!!


What is gravitational lensing or The bending of light by gravity?

If the mass of the moon was doubled and keptin the same location, then this number would

describe how much stronger the force of gravityof the moon on the Earth would be.


What is 2?

The Universal Gravitation law (and other mathematically similar laws)

is know by this Descriptive name because it has the Distance between the objects squared in the denominator.


What is the inverse square law?

This is the answer you get when you plug in your mass, the mass of the Earth, the radius of the Earth, and the value of

Ginto the universal gravitation equation.


What is my weight?

This is the fraction of your weight you would have if you were

to climb up and up and up until you were 1 Earth diameterabove the surface of the Earth.


What is 1/9th ?

Credits

• Customized by the Office of Corporate Communications for JHM– Design by Stephen Gaede– Questions by Shereen Jahed, Kara

Yeager, and Amanda Lindeman– www.hopkinsmedicine.org/masp

• Original template by Bill Arcuri, WCSD

http://www.hopkinsmedicine.org/masp




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Documents

moon effect

black hole perpendicular

earth thandoes

super massive black

new moon anda

answer slide

red graphic

speed of light