What Do We Mean When We Say That the Universe

question 12

Multiple Choice

What do we mean when we say that the universe is expanding?

• A)Average distances are increasing between star systems within galaxies.
• B)Everything in the universe is gradually growing in size.
• C)All galaxies are increasingly moving away from one another.
• D)The statement is not meant to be literal;rather,it means that our knowledge of the universe is growing.
• E)Individual galaxies are gradually growing in size.

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Definitions:

Crystal Ball

In forecasting and predictive analysis, a tool or method that allows for the estimation of future conditions or occurrences.

Tornado Charts

A graphical method used in sensitivity analysis to show the effect of varying different parameters on a particular outcome.

Monte Carlo Simulation

A computational algorithm that relies on repeated random sampling to obtain numerical results, often used in physical and mathematical problem-solving.

Correlation Coefficients

Statistical measures that quantify the strength and direction of the linear relationship between two variables, ranging from -1 (perfect negative correlation) to 1 (perfect positive correlation).