Upper Primary / Middle School
Sub Category
Non - Biodegradable objects or materials are those which do not easily decompose by natural factors. Non - Biodegradable Waste is the kind of waste that cannot be decomposed by biological processes. Most of the inorganic, plastic and artificial waste are non-biodegradable. Non-biodegradable wastes are of two types. The kind of non-biodegradable that can be recycled are known as “Recyclable waste” and those which cannot be recycled are known as “Non-recyclable waste”. Most of the non-biodegradable waste is non-recyclable waste making them extremely harmful and dangerous for the environment as well as human health.
Polluted land can have a variety of negative impacts on both the environment and human health. It can cause soil erosion, water contamination, and habitat loss. There are several ways to prevent land pollution, including reforestation, reducing, reusing, and recycling.
Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. Water, acids, salt, plants, animals, and changes in temperature are all agents of weathering and erosion.
Weather affects everyone and everything it its path, beginning with the clothes you put on to meet your day to the type of outdoor activities you choose to engage in. Weather impacts human, animal and plant health, as well as the food supply, and it contributes to the average climate in your area.
What are the examples of suspension materials?
Examples of Suspension
Muddy water.
Milk of magnesia.
Sand particles suspended in water.
Flour in water.
Slaked lime for whitewashing.
Paints in which dyes are suspended in turpentine oil.
Material is a substance or mixture of substances that constitutes an object. Materials can be pure or impure, living or non-living matter. Materials can be cl****ified on the basis of their physical and chemical properties, or on their geological origin or biological function.
Spring tides always happen when the Moon is at the full or new phase, which is when the Sun, Moon and Earth are in alignment. Neap tides occur around the first and last quarter phase of the Moon, when the Moon's orbit around Earth brings it perpendicular to the Sun.
The light energy reaches the solar cell and is converted into electricity by the photovoltaic effect. The solar cell converts light energy into electricity. The amount of energy is directly related to the intensity of light that strikes the cell.
What Is Light Energy? Light energy is a kind of kinetic energy with the ability to make types of light visible to human eyes. Light is defined as a form of electromagnetic radiation emitted by hot objects like lasers, bulbs, and the sun. Light contains photons which are minute packets of energy.
There are things you can do to help keep your eyes healthy and make sure you are seeing your best:
Eat a healthy, balanced diet. ...
Maintain a healthy weight. ...
Get regular exercise. ...
Wear sungl****es. ...
Wear protective eye wear. ...
Avoid smoking. ...
Know your family medical history. ...
Know your other risk factors.
Mixtures can be separated using a variety of techniques. · Chromatography involves solvent separation on a solid medium.
These eight phases are, in order, new Moon, waxing crescent, first quarter, waxing gibbous, full Moon, waning gibbous, third quarter and waning crescent. The cycle repeats once a month (every 29.5 days).
Sound waves enter the outer ear and travel through a narrow p****ageway called the ear canal, which leads to the eardrum. The eardrum vibrates from the incoming sound waves and sends these vibrations to three tiny bones in the middle ear. These bones are called the malleus, incus, and stapes.
The EPA defines environmental waste as “an unnecessary use of resources or a substance released to the air, water, or land that could harm human health or the environment.” This can include anything from construction materials to food scraps and everything in between.
WHAT IS NOISE POLLUTION? Not all sound is considered noise pollution. The World Health Organization (WHO) defines noise above 65 decibels (dB) as noise pollution. To be precise, noise becomes harmful when it exceeds 75 decibels (dB) and is painful above 120 dB.
Water pollution is the contamination of water sources by substances which make the water unusable for drinking, cooking, cleaning, swimming, and other activities. Pollutants include chemicals, trash, bacteria, and parasites. All forms of pollution eventually make their way to water.
Air, water, animals and insects are the common agents of pollination. Pollination by air: Light and dry pollen grains are carried by air to the other plants. Pollination by water: Pollen or the male flower is carried by water current towards the female flower to pollinate.
The moon is Earth's most constant companion and the easiest celestial object to find in the night sky.
A Non-Biodegradable material can be defined as a kind of substance which cannot be broken down by natural organisms and acts as a source of pollution. Unlike biodegradable wastes, non-biodegradable cannot be easily handled. Non-biodegradable wastes are those that cannot be decomposed or dissolved by natural agents.
Force is an external agent capable of changing a body's state of rest or motion. It has a magnitude and a direction. The direction towards which the force is applied is known as the direction of the force, and the application of force is the point where force is applied.