Задания 32-38
Ответы:
- B) reach
- D) shining
- C) for
- B) faraway
- D) quite
- C) adds
- A) into
- B) Otherwise
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 __reach__ your eyes. If Alkaid stopped __shining__ today, people on earth would still see it __for__ about 210 years. Some of the stars you see here tonight may have stopped existing several thousand years ago. The light from some __faraway__ stars right now will not be seen on earth until thousands, or even millions, of years from now!
It’s __quite__ breathtaking, and it __adds__ 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.
But light waves stop only if they strike something, and their energy is transferred __into__ another form. __Otherwise__, they can go on and on, at the same terrific speed, with no loss of energy, forever!
