Basic Details
Word: Theory
Part of Speech: Noun
Meaning: An idea or set of ideas that explains something, especially in science or philosophy.
Synonyms: Hypothesis, idea, concept
Antonyms: Fact, reality
Idioms and Phrases
- Theory of relativity: Refers to a scientific theory that describes how time and space are linked. Example: "Einstein's theory of relativity changed our understanding of physics."
- Theory is all well and good: Suggests that while an idea may sound good, it might not work in practice. Example: "In theory, the plan is brilliant, but it may fail in real life."
Usage Examples
Example 1: The theory of evolution explains how living organisms develop and adapt over time.
Example 2: In maths class, we learned a new theory that helps us understand how to solve complex problems.
Example 3: The scientist proposed a theory that could change our understanding of climate change.
Fun Fact
Did you know that the word "theory" comes from the Greek word "theoria," which means "contemplation" or "viewing"? It reflects the process of observation and understanding of the world around us.
Famous Quote
"Theories are nice, but they must be tested against reality." - John von Neumann
Multiple Choice Questions (MCQs)
1. What does "theory" mean?
a) A set of rules
b) An idea that explains something
c) A type of experiment
d) A kind of animal
Answer: b) An idea that explains something
2. Which of these is a synonym of "theory"?
a) Fact
b) Hypothesis
c) Truth
d) Data
Answer: b) Hypothesis
3. Which is an antonym of "theory"?
a) Hypothesis
b) Guess
c) Reality
d) Concept
Answer: c) Reality
4. Which sentence uses "theory" correctly?
a) The theory ate breakfast.
b) The theory explains how the universe began.
c) The theory drove a car.
d) The theory listened to music.
Answer: b) The theory explains how the universe began.
5. What does the idiom "theory is all well and good" suggest?
a) An idea may sound good, but may not work in practice.
b) Theories are always correct.
c) Theories are better than facts.
d) An idea is easy to understand.
Answer: a) An idea may sound good, but may not work in practice.
