According to the Big Bang Theory, Why Do We Live

question 67

Multiple Choice

According to the Big Bang theory, why do we live in a universe that is made of almost entirely of matter rather than antimatter?

• A)The fact that we live in a universe made of matter is not surprising, because antimatter has never been shown to exist for real.
• B)GUT theories predict that under the conditions that prevailed in the early universe, the normal laws of physics would have been suspended so that only matter particles were created, and no particles of antimatter.
• C)During the first 0.001 second after the Big Bang, particles and antiparticles were made in almost but not perfectly equal numbers. Everything annihilated except the very slight excess of matter particles.
• D)Einstein's famous equation E = mc2 tells us that energy can turn into matter, but does not tell us that it can turn into antimatter.

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Definitions:

Accompanying Map

A map that is provided along with other materials or data to offer spatial context or additional information.

Convergent Plate Boundary

A region where two tectonic plates are moving toward each other, often resulting in one plate subducting beneath the other and leading to geological phenomena such as earthquakes and mountain building.

Plate Boundaries

The edges where two or more of Earth's tectonic plates meet, often resulting in geological activity such as earthquakes and volcanism.

Divergent Boundary

A tectonic plate boundary where two plates are moving away from each other, often resulting in the creation of new oceanic crust.