Bullying

Light travels in a straight line.

Think of the main property of light. Explain why this picture is impossible.

Activity taken from: Natural Science 5. Primary Education. Richmond - Santillana (2015)

Unit 5: Light. Primary and secondary colors.

Picture taken from: http://www.cyberphysics.co.uk/topics/light/colorAddition.html

Unit 5: Experiment - A Newton's disc

Light is all of the colors in one: white. When the wheel spins up to the right speed, the colors blend into a near-recreation of white light. This “white” wheel is created because your eyes cannot keep up with the rapid rate at which the individual colors are spinning!

https://www.stevespanglerscience.com/lab/experiments/disappearing-color-wheel/

Alma

Unit 5: Heat and light. Homemade kaleidoscope.

How Does It Work?

Examine the Rainbow Peephole in the middle of the cardboard disc.  If you look very closely, you can see that there are tiny “scratches.”  Light is actually made of colors, and these scratched lenses work in a way that refracts (bends) and separates these colors. The lenses are made out of a material called diffraction grating – a special material that bends and separates light into the colors of the spectrum.

These Rainbow Peepholes work in much the same fashion as a bunch of raindrops falling from the sky.  As the raindrops fall, they refract the light from the sun into the beautiful rainbow phenomenon we see at the end of a rainstorm.  You might ask why objects that don’t give off light have rainbows around them.  That is because objects reflect light, which gives them color. You probably noticed that there was a pattern to the colors of the rainbow you observed while looking at the glasses – red, orange, yellow, green, blue, indigo and violet (this is called ROY G BIV order). The diffraction grating material breaks up the light and we observe them in ROY G BIV order.

https://www.stevespanglerscience.com/lab/experiments/homemade-kaleidoscope/

Unit 5: Heat and Light. Disappearing Color Wheel.

How Does It Work?

Where'd those colors go?! Well… they're all there, they've just mixed 

together. 

The rapid spinning of the Disappearing Color Wheel causes the colors to 

“blend” into each other. This blending creates the illusion that they're 

actually white! How does that happen?

Light is all of the colors in one: white. When the wheel spins up to the right 

speed, the colors blend into a near-recreation of white 

light. This “white” wheel is created because your eyes cannot keep up with 

the rapid rate at which the individual colors are spinning!

 https://www.stevespanglerscience.com/lab/experiments/disappearing-color-wheel/

Questions in Present Perfect Simple

Present Perfect - Have or has

Present Perfect - Mistakes

Present Perfect

Unit 2 - Economy

THE THREE SECTORS OF THE ECONOMY

TO START A FARMING ACTIVITY

Unit 5 - Heat and light.

As you probably know, heat rises! Hot air balloons work at lifting a balloon off the ground by making the air inside the balloon hotter, and ultimately less dense, than the air outside. Similarly, this tea bag flying machine lifts off once the fire burns the tea bag into lightweight ash. The rising hot air current lifts what’s left of the bag and blows it into the air.

La Declaracion de los Derechos Humanos

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