EGE 30-36 (G3_03)

Light from the Past. When you stand and look at the stars, you are really looking at past history. The light from Alkaid, the end star in the handle of the Big Dipper, has taken about 210 years to _______ your eyes.

• approach

• reach

• hit

• achieve

If Alkaid stopped ______ today, ...

• burning

• flashing

• blushing

• shining

... people on earth would still see it ______ about 210 years.

• after

• through

• for

• at

Some of the stars you see here tonight may have stopped existing several thousand years ago. The light from some _____ stars right now will not be seen on earth until thousands, or even millions, of years from now!

• farewell

• faraway

• far

• fair

It’s _______ breathtaking.

• quit

• quick

• quiet

• quite

And it _______ to the great mystery about the nature of light. Think about water waves. They get smaller and smaller in amplitude as they travel. Their energy is lost in friction among the water molecules. Think of sound waves in air. They too get weaker and weaker because of friction among the air molecules.

• enlarges

• increases

• adds

• multiplies

But light waves stop only if they strike something, and their energy is transferred ______ another form.

• into

• onto

• for

• at

________, they can go on and on, at the same terrific speed, with no loss of energy, forever!

• although

• otherwise

• whatever

• either