Grade 9 NATURAL SCIENCE Term 2
Revision with Complete Solutions
What is the chemical symbol for water?
✔✔ H2O
What is the process by which plants release water vapor into the atmosphere?
✔✔ Transpiration
What type of energy is stored in food?
✔✔ Chemical energy
What is the term for a substance that cannot be broken down into simpler substances?
✔✔ Element
What is the main function of the digestive system?
✔✔ To break down food into nutrients
1
, What is the unit of measurement for force?
✔✔ Newton
What is the primary gas used by plants for photosynthesis?
✔✔ Carbon dioxide
What type of bond involves the sharing of electron pairs between atoms?
✔✔ Covalent bond
What is the largest organ in the human body?
✔✔ Skin
What type of rock is formed from the cooling and solidification of magma or lava?
✔✔ Igneous rock
What is the term for the movement of molecules from an area of high concentration to an area of
low concentration?
✔✔ Diffusion
2
Revision with Complete Solutions
What is the chemical symbol for water?
✔✔ H2O
What is the process by which plants release water vapor into the atmosphere?
✔✔ Transpiration
What type of energy is stored in food?
✔✔ Chemical energy
What is the term for a substance that cannot be broken down into simpler substances?
✔✔ Element
What is the main function of the digestive system?
✔✔ To break down food into nutrients
1
, What is the unit of measurement for force?
✔✔ Newton
What is the primary gas used by plants for photosynthesis?
✔✔ Carbon dioxide
What type of bond involves the sharing of electron pairs between atoms?
✔✔ Covalent bond
What is the largest organ in the human body?
✔✔ Skin
What type of rock is formed from the cooling and solidification of magma or lava?
✔✔ Igneous rock
What is the term for the movement of molecules from an area of high concentration to an area of
low concentration?
✔✔ Diffusion
2
