ELS Review

What do you call the most widely accepted theory about how our universe started which explains that it began with a single dense point and expanded and still expanding today?

• Big Bang Theory
• Steady State Theory
• Oscillating Universe Theory

Which best describes the Steady State Theory?

• Universe has no beginning and no end.
• The universe started with a single dot.
• The universe undergoes an infinite series of cycles.

Based on this theory, our universe is just one of the many. What theory is being referred to?

• Multiverse Theory
• Big Bang
• Steady State Theory

Aside from the Big Bang Theory, this suggests that the universe is constantly expanding, generating new universes in the process. What theory is this?

• Eternal Inflation Theory
• Multiverse Theory
• Steady State Theory

The Nebular Theory is the most accepted theory about the solar system's origin. According to this, what was the reason why a body of cloud collapsed forming the solar system?

• Gravity
• Acceleration
• Planetesimals

This hypothesis suggests that some planets and other objects in the solar system might have been formed elsewhere in space and were then captured by the Sun's gravitational pull.

• Capture Hypothesis
• Planetesimal Hypothesis
• Nebular Theory

What do you call the small solid objects ranging from dust grains to larger rocks which have significant role in the formation of the solar system?

• Planetesimals
• Planets
• Asteroids

This idea proposes that a near collision between the Sun and another star could have disturbed a pre-existing cloud of gas and dust, causing material to be pulled out and form planets in the process

• Tidal Hypothesis
• Nebular Theory
• Capture Hypothesis

What subsystem of Earth includes the crust, mantle, and the core?

• Geosphere
• Biosphere
• Hydrosphere

Which of the layers of earth is considered to be the thinnest layer?

• crust
• mantle
• core