Middle School Science Praxis 5442 Questions and Answers 100% Pass

Middle School Science Praxis 5442 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 2 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 3 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 4 What process describes the breaking down of rocks by natural forces? Weathering What is the main source of oxygen in the Earth's atmosphere? Photosynthesis What do you call the path that an object follows as it moves around another object in space? Orbit What is the name of the galaxy that includes our solar system? The Milky Way What are the two types of waves that transfer energy? Mechanical and electromagnetic