How to Protect Yourself plants

Animals can run, to escape. But plants have own way of protecting themselves. Plants have parts
the body to protect itself. Which are the parts of the plant can keep yourself? Let us learn together.
Here are plants that are grouped based on the way protect himself.
 

a. using thorns
 

Thorns on the stem. Observe roses in your garden! beautiful and fragrant yes, but be careful when less carefully exposed spines. examples of plants others are tree bark, citrus, and bougenvil.

 b. using sap
The tree has a very sticky sap. Sap will exit if bark scratched or broken branches. For example, the sapodilla tree, jackfruit, cashew and rubber trees.

c. Using a sharp feather
There are certain herbs that protect themselves with feathers sharp. Sharp feathers found on the trunk. Feathers sharp can be attached to powerful and cause itching. Examples feathers
the bamboo trees and sugar cane.

d. toxic
Cassava leaves are very dangerous if eaten raw. So when will eat the cassava leaves, should direbusnya first. So as to eliminate the poison. This leaves safe from animals
predators. Because it can be toxic to animals.

Miscellaneous vitamins

Vitamins are important substances, but can not be made in the body. Vitamin just obtained in the diet. vitamins useful as regulators and maintaining endurance. vitamin there several kinds, including vitamins A, B, C, and vitamin D.
 

• Vitamin A, is useful to maintain eye health. Lack of vitamin A cause night blindness disease. Vitamin A found in carrots, papaya and tomatoes.

• Vitamin B, is useful to prevent the disease beriberi and edema hungry. Vitamin B contained in the rice and vegetables.

• Vitamin C, is useful to prevent canker sores, gum bleeding and intestinal bleeding. Vitamin C is widely available in oranges, tomatoes and fruits that taste sour.

• Vitamin D, also called anti rickets. Lack of vitamin D cause disease rickets, which bones become brittle. food that contain vitamin D include butter, fish oil and egg yolk. Morning sunlight also helps the formation of vitamin D

................................. Hope it is useful ....................................

The types of soil

Soil types vary depending on the place. This relates with a weathered rock types in the area. Some types of soil can be described as follows.

•  Land berhumus

Berhumus ground dark because many contain humus. Humus comes from the remains of plants that have died. Ground These contain many nutrients. Also can hold water. Ground berhumus very fertile when compared to other soil types.

•  Sandy soil

Preparation of the soil is mostly sand. Sandy soil has easily passed the nature of water. In general, sandy soilsless fertile. Different if the slope of the volcano. Ground sandy on the slopes of the mountain there is volcanic ash. Volcanic ash from volcanoes contain nutrients.

•  Clay

The clay is very sticky and elastic when it hit the water. Clay hard permeable. Clay can serve to ceramic base material.

•  Tantah calcareous

Calcareous soil contains a lot of rocks. Calcareous soil very easy to pass water. The content humusnya not so much. Calcareous soils are less fertile when planted

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How to Make a Simple periscope

periscope Is mirror located at the top serves to get shadow on higher ground. after shadow obtained upper part mirror, mirror the bottom will continue The shadow. Once set properly, the obtained shadow objects corresponding to the state of the object. For more details, let us make a simple periscope. Tools and materials
 

•  Bamboo diameter of 5 cm and 1 cm 
• Two flat mirrors berkuran 4 cm x 4 cm ways of making
• Place a mirror on each hole on his side facing hole. 
•  Look at the objects that are behind the high walls.
• Can you see it?

How are the results of your observations? After making observations you will know the usefulness of a periscope. Periscope useful for see objects in high places.

Way Know and Prove Color

The sunlight that we see white. but actually sun consisted of an assortment of colors. sun shades can be decomposed by water droplets in the air after it rains. Dots The water will describe the spectrum of sunlight. composition the color of sunlight, namely red, orange, yellow, green, blue, indigo, and purple. This is called the rainbow. This can be evidenced by color discs. When we turn the color disk is constantly it will produce white

Let us follow the following experiment. How to make

•  Make a circle of colored cardboard white with a diameter of 30 cm!
• Divide the circle into 7 equal parts to be restricted by the dividing line! 
• Make two holes each hole within 3 cm from the center of the circle!
• Give the different paint on each piece shaped pie (red, orange, yellow, green, blue, indigo, and violet)!
• Insert the thread into the second hole, a meeting both ends and tie!

 How to use color disc

•   Stretch the string with two fingers right index finger so that discs located in the middle between forefinger with one another.
• Rotate the disc until the knot.
• Remove the disc and observe. What colors do you see on the disc being played?

................................. Hope it is useful ....................................

Proving How Light Propagates in a simple straight

Proof light propagates straight you can see for yourself. For example, using the three middle perforated cardboard. Then enforced on the table and brought closer to the source light. Attach the clamp so that the paper can stand. Let us begin activities on together!

Tools and materials

•  3 pieces of cardboard with holes in the middle
• Wood clamp
• 1 piece Desk
• candles
• lighters

 

 
Step-by-step activities

• Jepitlah three paperboard which has been hollowed middle with wood clamp! 
• Place in a row on the table!
• Put candles and turn near the third carton! 
• Align the flame with cardboard hole!
• Perform these activities in place / dark room! 
• Can you see the light of a candle? 
• Slide one carton (the hole is straight)!
• Observe how the propagation of light!

These experiments, it can be proven that light propagates straight. Straight propagating light beams can be seen in the light car. Note the beam at the cinema! The beam straight staring at the movie screen. Beams of light coming from a film projector transmitted

 

How to process so that the nutritional value of foodstuffs not damaged.

The food we eat should be cooked. But there are eaten raw as a salad. Processing one can destroy substances contained therein.  Here is how to cultivate so that the nutritional value of foodstuffs  not damaged. 

• In order for nutrient content material not too much missing, then wash before cut into cut. Example: carrots, beans, vegetables, and etc.

• Pay attention to the length of boiling water. Cooking ingredients too long can destroy the nutrients contained therein.

• Raw foods reheated many times will result in nutritional value contained in it broken.

................................. Hope it is useful ....................................