Middle School Science Praxis Practice Test Questions with Verified Solutions

Middle School Science Praxis Practice Test Questions with Verified Solutions What is the main gas responsible for the greenhouse effect? Carbon dioxide Which part of a plant absorbs sunlight for photosynthesis? Leaf What is the most abundant gas in the Earth's atmosphere? Nitrogen What is the term for a rock formed from cooled lava? Igneous Which organ in the human body pumps blood? Heart 2 What is the name for the process by which plants lose water vapor through their leaves? Transpiration What do we call the liquid form of water? Liquid What is the main function of the roots in a plant? Absorb water and nutrients What do we call the process by which a solid turns directly into a gas? Sublimation What is the boiling point of water in Celsius? 100°C What is the chemical symbol for gold? Au 3 What is the force that pulls objects toward the Earth? Gravity Which planet is known as the "Red Planet"? Mars What is the process of changing a solid into a liquid? Melting What do we call a living organism that can make its own food? Autotroph What is the term for animals that eat both plants and animals? Omnivores What is the primary function of the skeletal system? Support and protect the body 4 Which layer of the atmosphere contains the ozone layer? Stratosphere What is the energy stored in an object due to its position or condition? Potential energy What do we call the study of living organisms and