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To view the presentation with pictures, design and slides, download its file and open it in PowerPoint on your computer.
Text content of presentation slides: WHY ARE PLANTS GREEN? The work was completed by: Taisiya Olegov Chervatyuk, 1st grade student, MBOU "Akimov Secondary School" of the Nizhnegorsky District Municipal Educational Institution. Scientific supervisor: Niyara Azhmerovna Musledinova, Primary school teacher. Plants play an important role on Earth. The vital processes of any organism require energy. The main source of energy on Earth is the energy of the Sun, which reaches us in the form of solar rays. However, animals, fungi and bacteria cannot use it in this form. We feed on organic substances and get energy from them. Plants can only perceive solar energy. Thus, plants provide food for almost all other living things on Earth. The purpose of my work was: to study the effect of sunlight on the growth and intensity of the photosynthesis process under different plant growing conditions. The object of the study was wheat. For the study, wheat seeds were germinated and sown; the plants were in two pots. One pot of wheat was placed in a dark closet, the other was on the windowsill in the primary school classroom. 3 days after the start of the experiment, observations were made: - the plant, which was in a dark cabinet, continued to grow regardless of its location, but it became lighter and the color changed from dark green first to bright green, and then to yellow. - no color changes occurred with the plant that was on the windowsill. After three days in the sun, the plant again acquired a green color. CONCLUSIONS Thus, the effect of sunlight on the growth and intensity of photosynthesis by plants was investigated. The plant in a dark cabinet did not stop growing, which proves that for plants to grow, sunlight is not necessary, but rather that they are watered. However, changes did occur: the color changed from dark green at first to bright green, then to yellow. This indicates that the leaves of the plant contain substances that, depending on the intensity of sunlight, affect its color. Based on literature sources, we found out that such substances are green pigments - chlorophylls. And in the plant placed in a dark cabinet, the process of destruction of these substances occurred. We also came to the conclusion that in the fall the leaves become multi-colored precisely because of this process - the process of destruction of the green matter, and then the leaves slowly die off. As for the second plant, no noticeable changes occurred with it; only after the height of the plants was measured, they came to the conclusion that the plants had grown. During the experiment, it was established that the growth of a plant does not depend on sunlight, but its color is directly related to the intensity of sunlight. Thank you for your attention!

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Why is the grass green? It is known that white color is a mixture of colors. This is easy to see if you pass a beam of light through a glass prism. Since different colors have different angles of refraction, we will see all the components of white color separately. Conventionally, these colors are divided into seven groups (“ colors of the rainbow"). White.

Slide 4 from the presentation “Methods of presenting graphic information”. The size of the archive with the presentation is 575 KB.

Computer Science 11th grade

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Gerchikova E.V.,

GBOU NOSH No. 300

Saint Petersburg

PLANTAIN

GROWING BY THE ROAD.

MEDICINES CONTAINING PLANTINE JUICE TREAT VARIOUS STOMACH DISEASES.

PLANTINE JUICE HEALS WOUNDS.

WORMWOOD

GROWS BY THE ROAD, IN VACENT AREAS AND IN ROVIES.

THEY HAVE A PLEASANT SMELL, BUT TASTE BITTER.

TREATS STOMACH DISEASES.

NETTLE

IT GROWS NEAR ROADS, FENCES, HOUSES.

IF YOU TOUCH IT, YOU CAN BURN.

TREATS INFLAMMATION, RESTORES HAIR.

TANSY

IT IS PEOPLE CALLED “ROWAN”, BECAUSE THE LEAVES OF TANSYBAR ARE SIMILAR TO THE LEAVES OF ROWAN.

THERE IS A SIMILARITY TO A BOUQUET OF CHAMOMILES, WITHOUT PETALS.

TREATS HEADACHES, DISLOCATIONS AND WOUNDS.

BURDOR

HAS STICKY BALLS WITH FLOWERS AND HUGE LEAVES.

MEDICINAL PLANT.

MINT

PLEASANT FRESH SMELL.

MINT LEAVES ARE PUT IN TEA.

USED ​​FOR THROAT DISEASES.

CHAMOMILE SMELLING

DOES NOT HAVE WHITE PETALS.

TREATS INFLAMMATION.

SOOTHING.

SOUR SORREL

THE LEAVES LOOK LIKE ARROWS.

SOUR TASTES.

CONSUMED AS FOOD.

BIRD BUCKWHEAT

IT GROWS IN YARDS, AT SPORTS GROUND, ALONE OF ROADS.

PEOPLE CALL IT “GRASS-ANT”.

BIRDS LOVE TO EAT WITH IT.

CLOVER

GROWS IN MEADOWS.

USED ​​IN PEOPLE'S MEDICINE.

Yarrow

USED ​​IN THE TREATMENT OF COLD DISEASES AND SKIN DISEASES. TREATS ALLERGIES.

Why do herbaceous plants turn yellow in the fall?

Because in the fall, the substance that is responsible for the green color in the plant is destroyed.

HOMEWORK:

TASK ON CARDS.