ITBS ITBS Science Concepts and Life Science 2 — Questions and Answers
Question 1: Which of the following is an example of a food chain?
- Sun → rock → water
- Grass → grasshopper → frog → hawk (Correct answer)
- Rain → cloud → river → ocean
- Soil → water → sunlight → wind
Correct answer: Grass → grasshopper → frog → hawk
A food chain shows how energy passes from one organism to another through eating, starting with a producer like grass.
Question 2: What is the term for animals that eat only plants?
- Carnivores
- Omnivores
- Herbivores (Correct answer)
- Decomposers
Correct answer: Herbivores
Herbivores are animals that eat only plants; examples include deer, rabbits, and cows.
Question 3: Which state of matter has a definite volume but no definite shape?
- Solid
- Liquid (Correct answer)
- Gas
- Plasma
Correct answer: Liquid
Liquids have a definite volume but take the shape of whatever container they are in.
Question 4: What do we call the process by which water turns from liquid into vapor?
- Condensation
- Precipitation
- Evaporation (Correct answer)
- Melting
Correct answer: Evaporation
Evaporation is the process where liquid water is heated and changes into water vapor.
Question 5: Which layer of the Earth is the outermost solid layer we live on?
- Mantle
- Core
- Crust (Correct answer)
- Magma
Correct answer: Crust
The crust is the thin, outermost solid layer of the Earth where we live.
Question 6: What is the main source of energy for nearly all ecosystems on Earth?
- Wind
- The Sun (Correct answer)
- Water
- Soil
Correct answer: The Sun
The Sun provides the light energy that plants use in photosynthesis, which powers nearly all food chains.
ITBS ITBS Science Concepts and Life Science 2
Which of the following is an example of a food chain?