Help is science project(big bang)?

Question

the 2 week of school, we have to go elementry school 5 grade..and explain the big bang....we have too...and im not sure how to say it sarcasticaly(im being serious....everytime i explain it i laugh)...like i was going to tell them that before time and anything..there was NOTHING...and the big bang made everything.....and most likely they will ask..what is the big bang....and i will say, well its when something....eventhought there was nothing in the begining....there was somthing and it exploded(and i would tear up paper and trow in the air) and it exploded like this and it all fell perfectly together and created billions of planets and stars............so my question....so i dont get failed.....how do i explain this seriously...what would you say to the young minds??

Answer 1

The Big Bang is a bit misnamed. You see, Fred Hoyle didn't like the idea and wanted to discredit it.  It isn't an explosion, exactly.  And it doesn't necessarily say that everything in the Universe started at a single point.  It just says that it used to be denser and hotter than it is now.  It was Big, however.

You might draw a bunch of dots on a balloon with a magic marker.  Say that they represent galaxies.  As you blow up the balloon, the galaxies get farther apart. And the move apart faster if they were farther apart at the start.  And, there is no center on the surface of a balloon.  The Universe is like that, only with three dimensions of space.

I've talked to 5th grade classes.  They can ask really good questions, showing considerable insight into how things work. Don't be afraid to find that they're smart. Everyone knows something you don't.

Another thing you could do is find a copy of Sagan's Cosmos series.  Watch the bit where he talks to kids in his old school. He's got pictures from NASA to hand out, and everyone is really excited.

Read up on the Big Bang. Make up an outline.  Rehearse it. Anything worth doing is worth doing well.

Answer 2

God Rules there was no big bang. God Created us!

Answer 3

The best thing to do in one of these presentations is to work to dispel misconceptions.  For example, most people (and, potentially you as well) think of the Big Bang as an explosion in space and time -- that there was an infinite black void until suddenly some region of it exploded.  In reality, it was an expansion OF space and time.

This can be confusing, so I'd recommend you ditch the torn-up paper imagery and use this for an analogy:

Take a balloon and draw little dots on it with a permanent marker.  As you inflate the balloon, the dots move further apart.  This is like the expansion of the Universe, where the surface of the balloon is a curved two-dimensional universe (instead of the 3 dimensions of space we have).  So the galaxies are moving further apart from each other, but the space between them is what's actually increasing.

Answer 4

there was nothing in the world but moleculs and soon the moluecs made combinded and made a large "bang" whci exploded into the Earth and the other planets so that is the big band theory. GOOD LUCK!!

this is coming from a 13 year old just so u know)

Answer 5

The scientific theory is that the Universe started what is called a "fluctuation of the vacuum". I'll explain what that is.

Vacuum first. Vacuum is emptiness, the absence of matter and energy.

A vacuum fluctuation is the appearance for a short time of a small amount of energy. This sounds weird, but is allowed by the strange physics of elementary particles. These vacuum fluctuations are also responsible for the existence of the nuclear and electric forces, that hold the Universe and matter together.

Normally the bigger the energy that appears in the vacuum fluctuation, the smaller the time it is allowed to exist.

Not so the Big Bang.

That was a HUGE fluctuation. So big that a lot of energy came to appearance in the form of mass, elementary particles. These particles started to wander away, before the vacuum could reclaim the energy: the Universe started to expand.

And it is still expanding today. 14 billion years later. In the mean time, stars were formed, and galaxies, and planets like the Earth.

So, it is amazing, but... our Universe started by chance, by a vacuum fluctuation much bigger than the average. Or, if you prefer, maybe it was the hand of God that started it.

Answer 6

The Big Bang theory explains what happens to a universe that begins in a state of unbound energy density (what we call unlimited temperature), and is allowed to expand while cooling.

It does NOT explain how or why the universe was in that state.  It simply takes for granted that the universe began that way (that is the Primordial Atom Hypothesis).

At the earliest time that we can understand (very close to time=zero, but NOT exactly at zero), the temperature was so hot that every single point in the universe was a black hole.

Maybe gravity already existed at that exact moment, maybe it came a tiny bit after.  We do not know yet.  We do know that matter did not exist yet, only energy.

As the temperature dropped, the forces "condensed" (electromagnetism, weak nuclear, strong nuclear).

After a whole second, the first particles began to appear (quarks, then electrons, neutrinos, protons...) then the first atoms.  This lasted all of 3 minutes.

Only the lighter elements were formed at first (mostly hydrogen and helium, with a pinch of Lithium, Beryllium...).

Temperature continued to drop (and it is still dropping, even today).  There was still too much energy for electrons to stay in orbit around protons.  They kept getting knocked off.

When the temperature dropped to 3000 K (4900 F), the photons were no longer strong enough to keep electrons away from protons and the neutral atoms were formed.  The universe suddenly became transparent.  The light suddenly liberated created the radiation that we can still see today as the Cosmological Microwave Background radiation.  This took place 300,000 years after the beginning.

The Big Bang theory does NOT say that there was nothing then something.  The Big Bang theory does NOT explain how things started.  The Big Bang theory ONLY explains what happens AFTER the expansion began.

Atheists have long been against the Big Bang theory because it allows that the universe had a beginning, therefore it leaves the possibility open that there could have been a "creation".

There was no "explosion", only an expansion (that is still going on).

Answer 7

You could ask your teacher to prove the theory to you first.  And since it's just a theory, it can't be, you might ask to decline based upon not sharing a theory that they cannot prove.

You could explain that there are parts of the universe that are actually contracting toward each other rather than expanding out, like an explosion.

Or you could just sing the theme song from "the Big Bang" TV show.