![]() ![]() Students make accurate measurements and control variables to analyse relationships between system components. They investigate relationships in the Earth-sun-moon system and use models to predict and explain events. They explore the notion of renewable and non-renewable resources and consider how this classification depends on the timescale considered. They consider the interaction between multiple forces when explaining changes in an object's motion. They use and develop models such as food chains, food webs and the water cycle to represent and analyse the flow of energy and matter through ecosystems and explore the impact of changing components within these systems. In Year 7, students explore the diversity of life on Earth and continue to develop their understanding of the role of classification in ordering and organising information. Year 11 & 12 | Biology | Chemistry | Human Biology | Physics | Integrated Science Curriculum, Assessment and Reporting Policy.Information & Communication Technology (ICT).Program Coordinator - Inclusive Education.Aboriginal and Islander Education Officer (AIEO).Middle School - Resilience & Anti-Bullying.Tectonic: Surface activity on a large rocky body (such as a planet or moon) as liquid rock flows up to the surface where it solidifies, then slowly drifts atop molten rock, carrying surface features with it. Phenomena: Events or developments that are surprising or unusual. Molten: A word describing something that is melted, such as the liquid rock that makes up lava. For example, the oxygen in the air is made of two oxygen atoms (O 2), but water is made of two hydrogen atoms and one oxygen atom (H 2O). Molecules can be made of single types of atoms or of different types. Molecule: An electrically neutral group of atoms that represents the smallest possible amount of a chemical compound. Liquid: A material that flows freely but keeps a constant volume, like water or oil. (in electricity) The flow of electricity or the amount of charge moving through some material over a particular period of time. This process occurs in the outer layers of some stars.Ĭurrent: A fluid - such as of water or air - that moves in a recognizable direction. ![]() (The other two are convection and radiation.) In conduction, energy is transferred when atoms and molecules bump into each other, with slower, colder particles gaining energy from the warmer, faster ones that slam into them.Ĭonvection: The rising and falling of material in a fluid or gas due to uneven temperatures. buoyancy) An adjective for something that can float on or rise above some liquid or gas.Ĭonduction: One of three major ways that energy is transferred. In a sentenceĬonvection may help explain the Mpemba effect, which happens when hot water freezes faster than cold water.Ĭheck out the full list of Scientists Say.Ītmosphere: The envelope of gases surrounding Earth, another planet or a moon.īuoyant: (n. And the convection of molten rock deep inside Earth is thought to shuffle around the tectonic plates on its surface. Rising warm water and falling cool water drive ocean currents. The churning of warm and cool air in the atmosphere creates wind. ![]() It gradually warms water throughout the pot, even though the only heat source is at the bottom.Ĭonvection is behind many natural phenomena. This loop of rising and falling water is a convection current. This causes them to sink back down to the bottom of the pot, where they reheat and rise again. ![]() As they lose heat, they move more slowly and get closer together. In the process, those first molecules cool off, because they have lost some thermal energy. As a result, they become more buoyant, or able to rise.Īs those molecules rise, they give some of their thermal energy away to other, cooler molecules. These more energetic molecules speed up and spread out. First, water molecules near the heat source at the bottom warm up. If you’ve ever heated a pot of water on the stove, you’ve seen convection in action. Convection transfers heat through the movement of a liquid or gas. It can get there through conduction, radiation or convection. Heat, or thermal energy, naturally flows from hot to cold. Convection is one of three major ways heat moves from place to place. ![]()
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