Máquinas simples

Máquinas simples

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/

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/

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.

UNIT 4 - How to make a lemon battery

For more information, click HERE. Enjoy!

Unit 4 - Energy

Unit 4 - Energy

PROJECT: HOW TO DO A SOLAR OVEN

Beneficial and harmful relationships. Test.

The Goby and the Shrimp. Beneficial and harmful relationships.

Commensalism, mutualism, parasitism and competition

COMMENSALISM

MUTUALISM

PARASITISM

COMPETITION

Natural Sciences 5. Unit 3. Ecosystems.

Unit 2. Classification of living things. Monera, Fungi and Protista kingdoms. Viruses.

THE FUNGI KINGDOM

Wild mushrooms are living things that grow on forest floors, tree trunks and even on top of each other. They need moist, cool temperatures and some light. Here it is one mushroom you can find in one of the trees of our school, amazing!! isn't it?

Which living thing can you see?
Which kingdom does it belong to?
Is this living thing unicellular or multicellular?

THE PROTISTA KINGDOM

Protists include two very different types of organisms: algae and protozoa.

ALGAE

Algae are aquatic living things that can be unicellular or multicellular. They can make their own food (autotrophs). Somo multicellular marine algae can grow to a very large size.

Algae are very nutritious, so they are used as food in many countries. They are also used as fertilizer and to produce cosmetics.

PROTOZOA

Protozoa are unicellular living things that live in aquatic environments. They feed on other organisms. Somo protozoa can cause diseases, like malaria.

THE MONERAN KINGDOM

Monerans are unicellular living things. This kingdom includes bacteria, the most abundant of all living things.

BACTERIA

Bacteria are the smallest and simplest living things, and can only be seen through a microscope.

Most bacteria feed on other organisms, but some bacteria make their own food.

Bacteria can be foound everywhere in the world. They can live in all kinds of evnironments: in water, soil, air or inside other living things.

Some bacteria are helpful, like the ones used to make yoghurt, but other are harmful, like the ones that cuase cholera.

VIRUSES

Viruses are not included in any of the five kingdoms because they are not considered living things. They cannot perform vital functions (nutrition, interaction, reproduction) on their own. A virus is not a cell. It is a microscopic body that can only reproduce inside living things. Viruses may cause illnesses (influenza gripe, measles sarampión, chicken pox varicela etc.)

Unit 2. The classification of living things. Vertebrates.

A PLATYPUS

Unit 2. Natural Sciences. Living Things.

Natural Sciences project

The organisation of living things - Unit 1

Complete the diagram.

Write organ, tissue, system or cell under a picture. Then write the letters under the boxes below.

A JOKE