Class 8 Q2 2nd week-1

The initial explosion that resulted in the formation and expansion of the universe is called __________________.

• the Big Bang

• the start of the universe

• the beginning

• the formation of space

When did the big bang occur?

• 5000 year ago

• 13.7 billion years ago

• 2 million years ago

• unknown

The farther away galaxies are from us, the _______________ it is that they moving away from us.

• more uncertain

• slower

• faster

• more unpredictable

In which direction are nearly all galaxies moving?

• toward each other

• away from each other

• colliding into one another

• in the direction of Earth

a force that is causing the expansion of the universe to accelerate

• dark energy

• the big bang

• planetesimals

• solar nebula

a large cloud of gas and dust, such as the one that formed our solar system

• dark energy

• big bang

• dark matter

• solar nebula

Select a possibility of what will happen to the universe in the future.

• The universe will be destroyed by aliens.

• The universe may expand forever, therefore galaxies will continue to get further away from each other.

• The universe will explode.

• We don't have any hypothesis.

leftover thermal energy from the big bang

• solar nebula

• cosmic background radiation

• planetesimal

• dark matter

Light Years are a measure of __________.

• time

• speed

• distance

• light

an enormous explosion that occurs when a massive star dies

• black hole

• nuclear fusion

• supernova

• solar wind