2. Complete these sentences by matching the phrases below. The speed of stars can be measured using: ? the Doppler effect. The heat left over from the beginning of the universe is: cosmic microwave background radiation. Scientists recreate early conditions of the universe using ? particle accelerators. The prevailing idea about the beginning of the universe is called: ? the Big Bang theory. I need help!!
ITS EARTH SCIENCE but there isn't a category for it

where is earth?

complete these sentences by matching the phrases below.

the prevailing

idea about the

beginning of the

universe is

called:

the doppler effect.

the speed of

stars can be

measured using:

cosmic microwave

background radiation.

scientists

recreate early

conditions of the

universe using:

particle accelerators.

the big bang theory.

the heat left over

from the

beginning of the

universe is:

meteorologists would compare a new weather map with one 24 h old to see how fast a front is moving.