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Recursos educativos
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Complete. Dilation and contraction
EduBook Organización
- 1964 visitas
Complete the text with the correct words: heat contraction dilations mass temperature dilation material When objects heat up, the amount that they increase in temperature depends on three things, their…
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Introduction - Matter and materials
EduBook Organización
- 1941 visitas
Everything around us is made up of matter. Matter can be found in three states: solid, liquid and gas. The air we breathe is a gas, the water in rivers and seas is a liquid, and the rocks are in a solid…
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Introduction - Energy
EduBook Organización
- 1914 visitas
The Sun is the Earth's main energy source. The Sun provides plants and animals with light and heat. This means that they can grow, develop and live on Earth. Heat energy has other effects on…
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Reflection and refraction of light
EduBook Organización
- 1911 visitas
Objects reflect light When light shines on an object, sometimes it passes through the object and other times it reflects off it. When an object reflects light, we can see it. Mirrors A mirror is a…
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Answer. Light and sound
EduBook Organización
- 1 lo usan
- 1729 visitas
Answer the following questions in your notebook: What is light? Which of our senses perceives it? What does our image look like in a mirror? What do we use a magnifying glass for? Why do objects have…
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Unit 3: Medieval cities
EduBook Organización
- 1890 visitas
Altarpiece (n): a work of art located above and behind the altar of a church. apprentice (n): a person who acts as assistant and student to a skilled craftsman. artisan (n): a craftsman skilled at…
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A microscope
EduBook Organización
- 1843 visitas
A microscope is an instrument that magnifies very small objects, like cells, so that we can observe and study them. The main part of this instrument is a metal tube with a lens at each end: the eyepiece…
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Unit 9: Motion and forces
EduBook Organización
- 1834 visitas
Accelerate (v): to go faster; to increase in velocity. apparent weight (n): the total sum of forces acting on a body. area (n): a quantity which expresses the extent of a twodimensional surface.…
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Understanding Uncertainty
Tiching explorer Organización
- 2304 visitas
With this lesson students will study the Heisenberg uncertainty principle and how it can only be applied to the subatomic world, not to the ordinary world of macroscopic objects. In the quantum…
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Summaries - Machines and structures
EduBook Organización
- 1762 visitas
1. Electrical current An object becomes electrically charged when it contains an electrical charge. Some objects become electrically charged when we rub one against the other. For example, when you rub…
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