How Do Scientists Estimate How Old the Universe Is

question 50

Multiple Choice

How do scientists estimate how old the universe is?

• A)They measure the speeds and distances of galaxies, and calculate the time it took for them to travel that distance.
• B)They measure the abundances of radioactive elements in meteorites, and use their half- lives to calculate the age.
• C)They look up the answer in a book.
• D)They measure how fast the Sun is losing energy, and how much energy it has to lose.
• E)They make a guess; no one really knows how old the universe is.

---

Definitions:

Perishable

Characteristic of a good or product that has a limited shelf life and can deteriorate or expire, such as food or flowers.

Specific Profit Goal

A targeted financial benchmark that a business aims to achieve within a certain period through its operations.

Cost-Plus Pricing

A pricing strategy where the selling price is determined by adding a specific markup to a product's production cost.

Total Unit Cost

The complete expense incurred to produce, store, and sell one unit of a product, including both fixed and variable costs.