Astronomy Flashcards
What is astronomy?
The study of objects and processes beyond Earth.
Astronomy encompasses the history of the universe from the Big Bang to the present.
What event marks the beginning of the universe?
Big Bang.
The Big Bang is the initial event that led to the formation of the universe.
What is the scientific method?
A process involving observation, hypothesis formation, testing, and model refinement.
The scientific method is essential in conducting scientific research.
Define observational science.
A science relying on observations rather than controlled experiments.
Astronomy is primarily observational due to the inability to manipulate celestial objects directly.
What is a hypothesis?
A proposed explanation for a phenomenon, subject to testing.
What is a light-year?
The distance light travels in one year, used to measure astronomical distances.
What are universal laws?
Natural laws that apply consistently throughout the universe.
True or False: Astronomy is a historical science.
True.
Historical science studies past events that cannot be altered.
What is relativity?
Einstein’s theory describing how space and time are linked.
Define black hole.
A region of space where gravity is so strong that nothing, not even light, can escape.
What is scientific notation?
A way of expressing large or small numbers using powers of ten.
What does the metric system (SI) refer to?
The standardized system of measurement used in science.
What is the primary role of mathematics in astronomy?
To supplement scientific models where language falls short.
Fill in the blank: Astronomy evolves alongside _______ advancements.
[technological]
What is the cosmos?
The universe as a complex and orderly system.
What is a model in scientific terms?
A representation or explanation of natural phenomena based on evidence.
What is peer review?
The evaluation of scientific work by others in the field to ensure quality and accuracy.
