Questions and Answers 100% Pass
What is the primary source of energy for life on Earth?
✔✔ The Sun
What is the chemical formula for water?
✔✔ H₂O
What are the three states of matter?
✔✔ Solid, liquid, gas
What is the process by which plants make their own food?
✔✔ Photosynthesis
What gas do plants release during photosynthesis?
✔✔ Oxygen
1
,What are the building blocks of proteins?
✔✔ Amino acids
What is the basic unit of life?
✔✔ The cell
What type of energy is stored in food?
✔✔ Chemical energy
What tool is used to measure temperature?
✔✔ Thermometer
What is the term for an organism that can make its own food?
✔✔ Autotroph
What is the process by which water changes from a liquid to a gas?
✔✔ Evaporation
2
, What force keeps objects on the ground?
✔✔ Gravity
What is the main organ responsible for pumping blood in the human body?
✔✔ The heart
What is the term for the movement of energy through food chains?
✔✔ Energy flow
What are the tiny particles that make up all matter?
✔✔ Atoms
What layer of the Earth is made up of solid rock and includes the crust and upper mantle?
✔✔ Lithosphere
What do you call the variable that is changed or manipulated in an experiment?
✔✔ Independent variable
3