Category: Uncategorized
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Population Change
sorces: Cambridge Lower Secondary Science Stage 9 – Student’s Book, Our lovely science teacher ❤ Resources and adaptation To survive and reproduce in an ecosystem, organisms need resources. The table shows resources needed by plants and animals. Adaptations to life in desert Deserts are extreme environments. They are very dry and may be very hot…
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Variation and Inheritence
sources: Cambridge Lower Secondary Science Stage 9 – Student’s Book, Our lovely science teacher ❤ Discontinuous and Continuous Variation Discontinuous Variation Variation with a distinct set of options is discontinuous variation. For example, some people are able to roll their tongues and others are not. There are only two possible options in the characteristic of…
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The Excretory System
sources: Cambridge Lower Secondary Science Stage 9 – Student’s Book, Our lovely science teacher ❤ Excretion Excretion is when an organism gets rid of waste substances that it has made inside its cells. Excretion is one of the seven life processes that all living organism do. The excretory system Here is a diagram to show…
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Astronomy
sources: Cambridge Lower Secondary Science Stage 9 – Student’s Book, Our lovely science teacher ❤ Ideas about how the Moon formed After the Sun and planets started to form in our Solar System, it took at least 100 million years for the Moon to form. We know this because samples of rock from the Moon…
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Chemical reactions
sources: Cambridge Lower Secondary Science Stage 9 – Student’s Book, Our lovely science teacher ❤ Changes in chemical reactions Theory is a set of ideas that explain an observation, (ex. Conservation of Mass, Gravity, Evolution) Conservation of Mass Conservation of Energy Combustion is a chemical reaction between a substance and oxygen, which transfers energy as…
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Chemical structures and properties, bonding
sources: Cabridge Lower Secondary Science Stage 9- Student’s Book, Our lovely science teacher<3 Chemical Structures and Properties Periodic Table– How the elements are arranged in order of their atomic number Group– Column in the Periodic Table Period– Row in the Periodic Table Chemical Peoperty– A property that is seen when a substance takes part in…
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Plant Biology
sources: Cambridge Lower Secondary Science Stage 9 – Student’s Book Photosynthesis Most plants make their own food using a process called photosynthesis. This process uses chemical substances to make new chemical subtances. Photosynthesis is a process involving a series of chemical reactions by which carbon dioxide and water are converted into glucose and oxygen. Plant…
Science in a Nutshell 