LIGHT
Light is a form of energy that iluminates objects around us.
LIGHT
Light is a form of energy that iluminates objects around us.
LIGHT AND COLOURS
The light of the Sun seems to be white, but it is really made up of seven different colours.We can see these separate colours when white light passes through a prism.Light travels in a straight line until hits an object.When that happens, the object can absorb some colours and reflect others.The reflected colours are the ones that we see.
REFLECTIONS AND MIRRORS
When light hits a smooth surface ,such as glass,all the raysof ight reflect in one direction.Mirrors are extremely smooth and shiny, so they reflectvery clear images of any objects in front of them.
In contrast, when light hits a rough suface, such as wood or concrete, the rays reflect in many different directions. As a result, the light does not reflect clear images.
REFRACTION AND LENSES
Refraction happens when light changes direction as it passes from one medium (or material) into another.
The image of the spoon appears to bend or be broken. This is because air and water are materials with different densities.
A lens is a curvered piece of glass or transparent plastic that refracts light and can make objects look bigger or smaller.
REFRACTION
Convex and concave lenses
A lens is a curved piece of glass or transparent plastic taht refracts light and can make objects look bigger or smaller. There are two main types of lenses.
CONVEX
CONCAVE
Convex lenses (positive lenses) bend the light inwards.
Concave lenses (negative lenses) spread the light outwards.Projectors use concave lenses.
SOLAR PANELS
Solar panels use sunlight to generate power. The sunlight is absorbed by photovoltaic cells, which convert it into electricity. Large solar panels can provide enough electricity for homes, schools and other buildings.
Quiz
PREGUNTA 1/6
Light bouncing off a surface is ...
Absortion
Reflection
Refraction
¡CORRECTO!
SIGUIENTE PREGUNTA
PREGUNTA 2/6
Any lens causes light to refract.
False
True
I don't know
QUIZ LOREM IPSUM DOLOR SIT AMET
¡CORRECTO!
SIGUIENTE PREGUNTA
PREGUNTA 3/5
Light travels in...
zigzag lines
waves
strainght lines until it hits an object.
¡CORRECTO!
SIGUIENTE PREGUNTA
PREGUNTA 4/6
Light is refracted when it hits a mirror
True
I don't know
False
QUIZ LOREM IPSUM DOLOR SIT AMET
¡CORRECTO!
SIGUIENTE PREGUNTA
PREGUNTA 5/6
Light that bends when passing through water is...
Absortion
Refraction
Reflexion
¡CORRECTO!
SIGUIENTE PREGUNTA
PREGUNTA 6/6
White light is ____________?
Created when objects block light
Anything that makes light
All light colours mixed together
QUIZ LOREM IPSUM DOLOR SIT AMET
¡CORRECTO!
LIGHT 6º
mariajovellanos
Created on March 31, 2020
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Transcript
LIGHT
Light is a form of energy that iluminates objects around us.
LIGHT
Light is a form of energy that iluminates objects around us.
LIGHT AND COLOURS
The light of the Sun seems to be white, but it is really made up of seven different colours.We can see these separate colours when white light passes through a prism.Light travels in a straight line until hits an object.When that happens, the object can absorb some colours and reflect others.The reflected colours are the ones that we see.
REFLECTIONS AND MIRRORS
When light hits a smooth surface ,such as glass,all the raysof ight reflect in one direction.Mirrors are extremely smooth and shiny, so they reflectvery clear images of any objects in front of them.
In contrast, when light hits a rough suface, such as wood or concrete, the rays reflect in many different directions. As a result, the light does not reflect clear images.
REFRACTION AND LENSES
Refraction happens when light changes direction as it passes from one medium (or material) into another.
The image of the spoon appears to bend or be broken. This is because air and water are materials with different densities.
A lens is a curvered piece of glass or transparent plastic that refracts light and can make objects look bigger or smaller.
REFRACTION
Convex and concave lenses
A lens is a curved piece of glass or transparent plastic taht refracts light and can make objects look bigger or smaller. There are two main types of lenses.
CONVEX
CONCAVE
Convex lenses (positive lenses) bend the light inwards.
Concave lenses (negative lenses) spread the light outwards.Projectors use concave lenses.
SOLAR PANELS
Solar panels use sunlight to generate power. The sunlight is absorbed by photovoltaic cells, which convert it into electricity. Large solar panels can provide enough electricity for homes, schools and other buildings.
Quiz
PREGUNTA 1/6
Light bouncing off a surface is ...
Absortion
Reflection
Refraction
¡CORRECTO!
SIGUIENTE PREGUNTA
PREGUNTA 2/6
Any lens causes light to refract.
False
True
I don't know
QUIZ LOREM IPSUM DOLOR SIT AMET
¡CORRECTO!
SIGUIENTE PREGUNTA
PREGUNTA 3/5
Light travels in...
zigzag lines
waves
strainght lines until it hits an object.
¡CORRECTO!
SIGUIENTE PREGUNTA
PREGUNTA 4/6
Light is refracted when it hits a mirror
True
I don't know
False
QUIZ LOREM IPSUM DOLOR SIT AMET
¡CORRECTO!
SIGUIENTE PREGUNTA
PREGUNTA 5/6
Light that bends when passing through water is...
Absortion
Refraction
Reflexion
¡CORRECTO!
SIGUIENTE PREGUNTA
PREGUNTA 6/6
White light is ____________?
Created when objects block light
Anything that makes light
All light colours mixed together
QUIZ LOREM IPSUM DOLOR SIT AMET
¡CORRECTO!