Basic Details
Word: Sedimentary
Part of Speech: Adjective
Meaning: Relating to rocks that are formed from particles or the remains of plants and animals that settle at the bottom of lakes, rivers, or oceans.
Synonyms: Depositional, stratified
Antonyms: Igneous, metamorphic
Idioms and Phrases
- Set in stone: Something that cannot be changed; permanent. Example: "The date for the school play is set in stone, so make sure you mark your calendar."
- Like a rock solid commitment: A very strong and reliable promise. Example: "His promise to help me with my project is like a rock solid commitment."
Usage Examples
Example 1: Sedimentary rocks, such as sandstone and limestone, are formed through the accumulation of sediments over time.
Example 2: Geologists study sedimentary layers to understand Earth's history and the changes in climate.
Example 3: Fossils are often found in sedimentary rocks, giving us clues about ancient life on Earth.
Fun Fact
Did you know that sedimentary rocks cover about 75% of the Earth's surface? They are essential for understanding the planets geology and history!
Famous Quote
"The earth is composed of two kinds of rocks: the metamorphic, which have been changed under heat and pressure, and the sedimentary, which have come from the erosion of previous rocks and from organic matter." John W. Dawson
Multiple Choice Questions (MCQs)
1. What does "sedimentary" mean?
a) Related to solid rock
b) Related to rocks formed from particles
c) Related to molten lava
d) Related to gas
Answer: b) Related to rocks formed from particles
2. Which of these is a synonym of "sedimentary"?
a) Igneous
b) Stratified
c) Volcanic
d) Aquatic
Answer: b) Stratified
3. Which of the following is the opposite of "sedimentary"?
a) Metamorphic
b) Corrosive
c) Fossilized
d) Organic
Answer: a) Metamorphic
4. Which sentence uses "sedimentary" correctly?
a) Our group went for a sedimentary walk in the park.
b) Sedimentary rocks store important fossils and natural history.
c) We cooked a wonderful sedimentary meal last night.
d) The artist painted with sedimentary colours.
Answer: b) Sedimentary rocks store important fossils and natural history.
5. Which idiom relates to permanence like "sedimentary"?
a) Set in stone
b) Like a rock solid commitment
c) A rolling stone gathers no moss
d) Both a and b
Answer: d) Both a and b
