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Marianna [84]
3 years ago
10

Allen pours water into a graduated cylinder. He notices that the surface of the water is curved, as shown below.

Biology
2 answers:
Slav-nsk [51]3 years ago
4 0

Answer:

When water is added to a graduated cylinder, having a surface where the sides of the water look higher than the center means that the curved surface is a concave meniscus which has formed because of surface tension (Choice C).

Explanation:

A meniscus is simply the curvature that the surface of a liquid acquires when it is in a container, such as a graduated cylinder. It is concave when there is attraction between molecules -water and glass- or it can be convex when both surfaces are repelled.

<u>Water is a polar molecule</u>, with the capacity to adhere to the surfaces it comes into contact with. This characteristic causes it to form a concave meniscus, as the outermost molecules adhere to the glass surface, while the surface tension of the water attracts the molecules from the centre downwards, causing the concavity.

Learn more:

Measuring with a graduated cylinder brainly.com/question/4070509

Wittaler [7]3 years ago
3 0

Answer:

is A

Explanation:

Which of the following identifies this phenomenon and explains how it is formed?

Choose 1 answer:

(Choice A, Checked, Correct)

CORRECT (SELECTED)

The curved surface is a concave meniscus which has formed because of capillary action.

Capillary action occurs because the water molecules are more attracted to the cylinder than they are to each other. This causes the upward movement of the water along the sides of the glass, forming a curved surface called a concave meniscus.

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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
vivado [14]

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.

  • School

Children go to school for formal education and spend most of active hours of a day. They achieve several forms of health knowledge and develop healthy attitude and practise accordingly. Their heath status depends upon the environment of school , health curriculum, healthful school environment , co-curricular and extra - curricular health activities.

  • Community

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
3 years ago
Think about what abiotic factors giraffes and trees both need to survive. The tree and the giraffe are competing over what facto
nikitadnepr [17]
I would say space or at least a place of home
7 0
3 years ago
The colonial protist, volvox, gives birth to daughter colonies directly from the mother colony. This type of reproduction ......
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Answer: Asexual reproduction

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3 0
3 years ago
Read 2 more answers
Do male or female songbirds build the nest? please show source and evidence to support your answer
hjlf

Actually it is the females the mostly build the nests the males will help build it sometimes both males and females will build it but typically it is females and that goes for all birds.

"Females typically build nests, but sometimes both parents or just the male"

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Which type of skin glands are most affected by the hormonal changes that occur during puberty?
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Apocrine sweat glands  are most affected by the hormonal changes that occur during puberty.

What is puberty ?

Between childhood and adulthood, puberty is a time of rapid growth, the emergence of secondary sexual traits, the attainment of fertility, and significant psychological changes. Although the order in which pubertal changes occur is fairly predictable, their exact time varies greatly.

At puberty, sex hormones stimulate the apocrine sweat glands, which then begin to work. In the groin and axilla, they are linked to hair follicles. The thick, protein-rich substance has no smell at first but may acquire one after coming into contact with germs.

To learn more about  pubertal changes click on the link below:

brainly.com/question/15328076

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