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Sveta_85 [38]
3 years ago
14

Classify each statement as an example of adhesion, cohesion, or surface tension. Drag each statement to the appropriate bin. A s

ewing needle floats when it is placed gently on top of water in a bucket. Water molecules ding to plant cell walls. A water strider runs across a pond without breaking the surface. A drop of water spilled on a table forms a drop on the table, rather than spreading out over the surface. Water molecules cling to the side of a beaker. Water molecules are attracted to each other.
Biology
1 answer:
LekaFEV [45]3 years ago
8 0

Answer:

A sewing needle floats when it is placed gently on top of water in a bucket - surface tension

Water molecules ding to plant cell walls - adhesion

A water strider runs across a pond without breaking the surface - surface tension

A drop of water spilled on a table forms a drop on the table, rather than spreading out over the surface - cohesion

Water molecules cling to the side of a beaker - adhesion

Water molecules are attracted to each other - cohesion

Explanation:

The surface tension refers to the tendency of the surface of a liquid to remain unbroken by an external force due to the cohesive property of the molecules of the liquid. Instead of being broken, the surface of the liquid stretches like an elastic membrane.

The adhesive property of a liquid, also known as the force of adhesion, refers to the property of the molecules of the liquid to stick to other molecules while cohesive property or cohesion refers to the property of molecules of liquids to stick to themselves.

Hence,

<u>Surface tension</u>

  • A sewing needle floats when it is placed gently on top of water in a bucket.
  • A water strider runs across a pond without breaking the surface.

<u>Cohesion</u>

  • A drop of water spilled on a table forms a drop on the table, rather than spreading out over the surface.
  • Water molecules are attracted to each other.

<u>Adhesion</u>

  • Water molecules ding to plant cell walls
  • Water molecules cling to the side of a beaker
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6 0
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What theory explains how the universe was flattened
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3 years ago
1.What are the scope of environment education? Explain any 3 of them. 2.What are the scope of health education? Explain any 3 of
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Answer:

<h3>\boxed{\bold{  \orange{See \: below}}}</h3>

Explanation:

\bold{ \green {Scope \: of \: Environment \: education}}

Environmental education includes the study of various factors of the environment which affect the health of human beings. Environment comprises all the factors in our surroundings. It includes even abstract factors , which do not have weight , length and breadth. Cultural traits , social norms and values, feasts and festivals etc. are some of the examples of abstract aspects. Some of the scopes of environment education are described below:

  • Physical aspect ( soil , water , air , rocks , gases etc )

The physical aspect included non- living things on the earth. They are soil, water , air , rocks , gases etc. Environment education gives knowledge about the status of soil , water , air , rocks , gases and other various physical components of the earth. It aims to make students aware of the effects and consequences of human activities upon these factors. It also gives knowledge to raise environment friendly attitude and behavior among the students .

  • Biological aspect ( biology , agriculture , forestry etc )

The biotics factors include living plants and animals , their life mechanism , interrelationship etc. Some of the educational streams related to the biotic aspects are biology , agriculture , and forestry. They are some of the important scopes of the environment education. This branch of education helps to develop the level of knowledge , attitude and behavior regarding these factors in the students.

  • Socio - cultural aspect ( sociology , civics , religion , ethnicity , anthropology etc )

Environment has some of the abstract aspects too. Abstract aspects include religious , cultural , ethnic and social norms and values. Some of the educational streams dealing with this aspect are sociology , civics and anthropology. Environment education also teaches students about such abstract factors, which play vital role in the environment.

\bold{ \green{Scope \: of \: Health \: education}}

In general , scope of health education can be understood as the areas included in health education. Health education not only communicates knowledge about body features and diseases, but also includes the matters concerned with healthy surroundings , human psychological states affecting health , public health, human anthropology , medical science and so many other things. Any three scopes of health education are as follows:

  • Home

Home is the residence of all people. Home is the first school for all. A child passes the primary days of life at home. Every individual learns the basic skills if survival at home. Proper time to wake up in the morning , to start daily sanitary schedules, to eat , to practise all other health behavior are learnt at home. The child lives in community and learns many more about healthy social adjustment in the social environment. Health education aims to raise the level of knowledge , attitude , and behavior related to health and healthy life.

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Community is a place where many people live with their families. People's health is determined by the several factors in the community. Health education teaches about these factors like community sanitation , drainage , health service providing organizations and health centers.

\mathsf{Hope \: I \: helped !}

\mathsf{Best \: regards !}

8 0
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GarryVolchara [31]

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In this type of conditions, there's smaller and smaller number of young individuals, with the middle aged population being much bigger, and the older population being constantly on the rise. This will give the age-structure histogram a reverse shape than what it is supposed to have, it will be similar in appearance like a inverted pyramid, meaning that the population is aging and that it will be constantly on a decline in the future.

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3 years ago
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