By 1905 most scientists thought the universe ___ since they were looking at the evidence at the time.

By 1905 most scientists thought the universe ___ since they were looking at the evidence at the time.

Einstein's scientific papers in his miracle year were on

Properly interpreted, Einstein's general theory of relativity predicts that the universe must be

Einstein was convinced that the universe was ___ in 1917 and set out to prove it.

Since his equations ___ predict it, Einstein ___

LeMaitre showed how Einstein's general theory and observation predicted an expending universe. Einstein ...

Cepheid variables

Using Cepheid variables, Edwin Hubble showed

imagine a race car passing you. What does it sound like? As it approaches the pitch is ___ and as it recedes the pitch is ___ compared to the pitch measured by the driver.

So an approaching car's sound waves ___.

And a receding car's sound waves ___.

The approaching car's sound waves shift toward the ___ frequencies. The receding car's sound waves shift toward the ___ frequencies.

Blue light is ___ frequency than red light - it's closer to the ultraviolet

Receding stars and galaxies have light spectra that are shifted toward the ___. This is called the ___ shift and Hubble used it to find the speed of distant galaxies.

A car approaching you at a higher speed will have a ___ pitch

Once Hubble presented his evidence and it confirmed Lemaitre's idea of the expanding universe

Based on their calculations, ___ would have to be created each day in each galaxy to be consistent with the steady state theory.

This radio static represented

There is ___ evidence for String Theory.

String Theory is ___ explanation for particles and their interactions in the universe.

String Theory is an elegant solution and does fit many of our confirmed ideas about the universe

"Multiverse Theory"

We are alive in our universe and observing it. That is because

There is ___ evidence for multiverse theory

Michelson and Morley expected the speed of light to be ___ when traveling parallel and perpendicular to the motion of Earth

The Michelson-Morley result showed that the speed of light is ___ no matter the speed of the source or observer

A baseball thrown forward at 30 mph in a bus traveling 50 mph will be measured to have a speed of ___ when measured by a "stationary" observer.

A light beam fired forward in a bus traveling at half the speed of light will be measured to have a speed of ___ when measured by a "stationary" observer.

Einstein concluded that each person's measurement of ___ would be different at different speeds

You will ___ measure objects traveling with you to be acting differently

Special relativity is called "special" because it mostly deals with

I travel past you near the speed of light. You measure my meter stick to be ___ than yours

I travel past you near the speed of light. I measure your meter stick to be ___ than mine

Since we both measure each other's meter sticks to be shorter, which perspective is correct?

I travel past you near the speed of light. You measure my clock to be ticking ___ than yours

I travel past you near the speed of light. I measure your clock to be ticking ___ than mine

Since we both measure each other's clocks to be ticking slower, which perspective is correct?

Particles moving near light speed will collide with ___ force than we normally calculate

Particles collide with more energy, more force, more momentum than we expect when traveling near light speed because

According to the Special Theory of Relativity, objects ___

Length is contracted ___ when near the speed of light

General Theory of Relativity explains gravitational force as

General Theory of Relativity explains orbiting planets as

General Theory of Relativity was experimentally confirmed in 1919

According to General Relativity, time ticks ___ in stronger gravitational fields

According to General Relativity, time ticks ___ on a satellite around Earth than at the surface of Earth