Here are the answers to your Integrated Science questions: 1. (a) Science is the systematic study of the natural and physical world through observation and experimentation. 1. (b) Three branches of science are: I. Biology II. Chemistry III. Physics 1. (c) One example of each branch: I. Biology: Botany (study of plants) II. Chemistry: Organic Chemistry (study of carbon compounds) III. Physics: Mechanics (study of motion and forces) 2. (a) Matter is anything that has mass and occupies space. 2. (b) The three states of matter are: I. Solid II. Liquid III. Gas 2. (c) Two characteristics of each state: I. Solid: Definite shape and definite volume. II. Liquid: Indefinite shape (takes shape of container) and definite volume. III. Gas: Indefinite shape and indefinite volume. 3. (a) Energy is the ability to do work. 3. (b) Four forms of energy are: I. Kinetic energy II. Potential energy III. Heat energy IV. Light energy 3. (c) Two uses of solar energy: I. Generating electricity (solar panels) II. Heating water (solar water heaters) 4. (a) Force is a push or a pull that can change the motion or shape of an object. 4. (b) Two types of forces are: I. Contact forces II. Non-contact forces 4. (c) One example of each type: I. Contact force: Friction II. Non-contact force: Gravity 5. (a) Photosynthesis is the process by which green plants use sunlight to synthesize foods from carbon dioxide and water. 5. (b) The raw materials needed for photosynthesis are: I. Carbon dioxide II. Water III. Sunlight (as energy) IV. Chlorophyll (as pigment) 5. (c) The word equation for photosynthesis: $$ \text{Carbon dioxide} + \text{Water} \xrightarrow{\text{Sunlight, Chlorophyll}} \text{Glucose} + \text{Oxygen} $$ 6. (a) Respiration is the process by which living organisms release energy from food molecules. 6. (b) Two types of respiration are: I. Aerobic respiration II. Anaerobic respiration 6. (c) One difference between them: Aerobic respiration requires oxygen, while anaerobic respiration does not require oxygen. 7. (a) The human circulatory system is a network of blood vessels, blood, and the heart that transports nutrients, oxygen, hormones, and waste products throughout the body. 7. (b) The main organs involved are: I. Heart II. Blood vessels (arteries, veins, capillaries) III. Blood 7. (c) Two functions of blood: I. Transports oxygen from the lungs to the body tissues. II. Transports nutrients from the digestive system to the body cells. 8. (a) An ecosystem is a community of living organisms (biotic components) interacting with their non-living environment (abiotic components). 8. (b) Two components of an ecosystem are: I. Biotic components (living organisms) II. Abiotic components (non-living factors) 8. (c) Two examples of ecosystems: I. Forest ecosystem II. Pond ecosystem 9. (a) Electricity is a form of energy resulting from the existence and flow of charged particles, typically electrons. 9. (b) Two sources of electricity: I. Thermal power plants (burning fossil fuels) II. Hydroelectric power plants (using water flow) 9. (c) Two safety precautions when using electricity: I. Avoid touching bare wires or damaged electrical cords. II. Do not use electrical appliances with wet hands or near water. 10. (a) Soil is the loose surface material of the Earth in which plants grow, consisting of inorganic and organic materials, water, and air. 10. (b) Three types of soil are: I. Sandy soil II. Clay soil III. Loamy soil 10. (c) One use of each type: I. Sandy soil: Good for drainage and suitable for crops like carrots and potatoes. II. Clay soil: Good for water retention and used in pottery and brick making. III. Loamy soil: Ideal for most agricultural crops due to balanced water retention and drainage. Last free one today — make it count tomorrow, or type /upgrade for unlimited.