Rainbow occurs because of the refraction of light. The sunlight that shines in between the rain drops is refracted by the rain drops. This process separates the white light of the sunlight into a spectrum of different colors.

The spectrum of colors are red, orange, yellow, green, blue, indigo, and violet. Or what we often memorize as the abbreviation "ROY G BIV / mejikuhibiniu.” Then the colors reflect in the back drops of rain, resulting the light which looks arched and becomes the rainbow.

Why does rainbow occur?

Rainbow occurs because of the refraction of light. The sunlight that shines in between the rain drops is refracted by the rain drops. This process separates the white light of the sunlight into a spectrum of different colors.

The spectrum of colors are red, orange, yellow, green, blue, indigo, and violet. Or what we often memorize as the abbreviation "ROY G BIV / mejikuhibiniu.” Then the colors reflect in the back drops of rain, resulting the light which looks arched and becomes the rainbow.

The spectrum of colors is actually from ......

The snowfall is always exciting, isn’t it? In the snowfall you can crunch through the snow, make a snowman and play snowballs with your brother. Have you ever wondered how snow is made, though?

Snow occurs when water vapors in the air freeze before they can turn into water. This happens when the temperature in the clouds is very cold. Snowflakes are made up of crystals of ice that have formed around bits of dirt in the air. The snowflakes start out very small and grow. Each snowflake is different and might contain up to 200 crystals.

The text above explains about ........

The snowfall is always exciting, isn’t it? In the snowfall you can crunch through the snow, make a snowman and play snowballs with your brother. Have you ever wondered how snow is made, though?

Snow occurs when water vapors in the air freeze before they can turn into water. This happens when the temperature in the clouds is very cold. Snowflakes are made up of crystals of ice that have formed around bits of dirt in the air. The snowflakes start out very small and grow. Each snowflake is different and might contain up to 200 crystals.

Water vapors in the air freeze before they can turn into water when ......

The snowfall is always exciting, isn’t it? In the snowfall you can crunch through the snow, make a snowman and play snowballs with your brother. Have you ever wondered how snow is made, though?

Snow occurs when water vapors in the air freeze before they can turn into water. This happens when the temperature in the clouds is very cold. Snowflakes are made up of crystals of ice that have formed around bits of dirt in the air. The snowflakes start out very small and grow. Each snowflake is different and might contain up to 200 crystals.

What phenomenon is explained in the text?

Do you know what a volcano is? I guess you all know volcano is a mountain with magma inside it. Most volcanoes are formed on land, but there are volcanoes that are on the ocean floor. In Indonesia, there is Mount Merapi and Mount Krakatau. Mount Merapi erupted on October 2010 and Mount Krakatau erupted in 1883. The eruptions were really massive and destructive. Do you want to know how is the volcano erupting? Well, let me explain to you.

What is the general statement of the text?

Tsunami

Tsunami occurs when major fault under the ocean floor suddenly slips. The displaced rock pushes water above it like a giant paddle, producing powerful water waves at the ocean surface. The ocean waves spread out from the vicinity of the earthquake source and move across the ocean until they reach the coastline, where their height increases as they reach the continental shelf, the part of the earth crust that slopes, or rises, from the ocean floor up to the land.

A tsunami washes ashore with oftendisastrous effects such as severe flooding, loss of lives due to drowning and damage to property.

A tsunami is a very large sea wave that is generated by a disturbance along the ocean floor. This disturbance can be an earthquake, a landslide, or a volcanic eruption. A tsunami is undetectable far out in the ocean, but once it reaches shallow water, this fast traveling wave grows very large.

Tsunami happened because of.....

Tsunami occurs when major fault under the ocean floor suddenly slips. The displaced rock pushes water above it like a giant paddle, producing powerful water waves at the ocean surface. The ocean waves spread out from the vicinity of the earthquake source and move across the ocean until they reach the coastline, where their height increases as they reach the continental shelf, the part of the earth crust that slopes, or rises, from the ocean floor up to the land.

A tsunami washes ashore with oftendisastrous effects such as severe flooding, loss of lives due to drowning and damage to property.

A tsunami is a very large sea wave that is generated by a disturbance along the ocean floor. This disturbance can be an earthquake, a landslide, or a volcanic eruption. A tsunami is undetectable far out in the ocean, but once it reaches shallow water, this fast traveling wave grows very large

What are the impacts of tsunami?

Tsunami occurs when major fault under the ocean floor suddenly slips. The displaced rock pushes water above it like a giant paddle, producing powerful water waves at the ocean surface. The ocean waves spread out from the vicinity of the earthquake source and move across the ocean until they reach the coastline, where their height increases as they reach the continental shelf, the part of the earth crust that slopes, or rises, from the ocean floor up to the land.

A tsunami washes ashore with oftendisastrous effects such as severe flooding, loss of lives due to drowning and damage to property.

A tsunami is a very large sea wave that is generated by a disturbance along the ocean floor. This disturbance can be an earthquake, a landslide, or a volcanic eruption. A tsunami is undetectable far out in the ocean, but once it reaches shallow water, this fast traveling wave grows very large

We understand from the text that tsunami ....

A natural disaster is a terrible accident, e.g. a great flood , a big fire, or an earthquake. It usually causes great suffering and loss of a large sum of money. The causalities are injured or died. Some people are homeless and need medical care.

Floods occur when the water of rivers, lakes, or stream overflow their banks and pour out into the surrounding land. Floods are caused by many different things. Often heavy rainstorms that last for a brief time can cause a flood. But not all heavy storms are followed by flooding. If the surrounding land is fl at and can absorb the water, no flooding will occur. If, however, the land is hard and rocky, heavy rain cannot be absorbed. Where the banks are low, a river may overflow and flood adjacent lowland.

In many parts of the world floods are caused by tropical storms called hurricanes or typhoons. They bring destructive winds of high speed, torrents of rain, and flooding. When a flood occurs, the destruction to the surrounding land can be severe. Whole villages and towns are sometimes swept away by water pouring swiftly over the land. Railroad tracks and buckles are uprooted from their beds. Highways are washed away.

When a building caught fire, the firemen pitched in to help battle the blaze. Before the pumps were invented, people formed bucket brigades to fight fires. Standing side by side, they formed a human chain from the fire to nearby well or river. They passed buckets of water from hand to hand to be poured on the flames.

The damage of fire did depend a great deal on where it happened. In the country or a small village, only a single house might burn down. But in crowded cities, fire often destroyed whole blocks and neighborhoods before being controlled.

What can possibly prevent rivers and lakes from overflowing?

Earthquake

An earthquake is a shaking of the ground caused by the sudden breaking and movement of large sections (tectonic plates) of the earth’s rocky outermost crust.

Earthquakes are usually caused when a rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing catch on each other. The rocks are still pushing against each other, but not moving. After a while, the rocks break because of all the pressure that’s built up. When the rocks break, the earthquake occurs.

What does the text mainly explain?

Earthquake

An earthquake is a shaking of the ground caused by the sudden breaking and movement of large sections (tectonic plates) of the earth’s rocky outermost crust.

Earthquakes are usually caused when a rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing catch on each other. The rocks are still pushing against each other, but not moving. After a while, the rocks break because of all the pressure that’s built up. When the rocks break, the earthquake occurs.

It can be concluded that earthquake happens when…

The night sky that occur most frequently in high latitudes of both hemispheres. They are categorized specifically according to their location. Auroras in the Northern Hemisphere are called the northern lights (aurora borealis), and in the Southern Hemisphere, auroras are called the southern lights (aurora australis). Auroras are caused by the sun, but they are not sunlight. In addition to light, the sun also sends out electrically charged particles stream of electrons and protons, called the solar wind. This stream of particles travels from the sun towards the Earth at high speed.

The earth is surrounded by a magnetic field, consisting of north and south magnetic poles. These magnetic poles are not the same as the North and South poles. As the charged particles in the solar wind penetrate the earth’s magnetosphere and enter the lower Van Allen radiation belt, the earth magnetic field deflects it to the magnetic poles. Then they collide with gas molecules, mostly oxygen and nitrogen, in the atmosphere. These collisions cause them to emit visible light at various wavelengths, creating the colors of the aurora. Because the light of auroras is not strong enough, they are generally only visible at night.

The topic of the above text is about…

the picture above is the example of ...

what is the picture telling about?

A geyser is the result of underground water under the combined conditions of high temperatures and increased pressure beneath the surface of the earth. Since temperature rises approximately 1 F for every sixty feet under the earth's surface, and pressure increases with depth, the water that seeps down in crack and fissures until it reaches very hot rock in the earth interior becomes heated to temperature in excess of 290 F. Because of the greater pressure, the water shoots out of the surface in the form of steam and hot water. The result is a geyser. In order to function, then a geyser must have a source of heat, reservoir where water can be stored until the temperature rises to an unstable point, an opening through which the hot water and steam can escape, and underground channels for resupplying water after an eruption.

Favorable conditions for geyser exist in some regions of the world including New Zealand, Iceland, and the Yellowstone National Park area of the United States. The most famous geyser in the world is Old Faithful in Yellow Park. Old Faithful erupts almost every hour, rising to a height of 125 to 170 feet and expelling more than ten thousand gallons during each eruption.

How geyser is produced?

Acid rain is rain that is highly acidic because of sulfur oxides, nitrogen oxides, and other air pollutants dissolved in it. Normal rain is slightly acidic, with a pH of 6. Acid rain may have a pH value as low as 2.8

Acid rain can severely damage both plant and animal life. Certain lakes, for example, have lost all fish and plant life because of acid rain. Acid rain comes from sulfur in coal and oil. When they burn, they make sulfur dioxide (SO2). Most sulfur leaves factory chimneys as the gaseous sulfur dioxide (SO2) and most nitrogen are also emitted as one of the nitrogen oxides (NO or NO2), both of which are gasses. The gasses may be dry deposited–absorbed directly by the land, by lakes or by the surface vegetation. If they are in the atmosphere at any time, the gasses will oxidize (gain an oxygen atom) and go into solution as acids. Sulphuric acid (H2 SO4) and the nitrogen oxides will become nitric acid (HNO3).

The acids usually dissolve in cloud droplets and may travel great distances before being precipitated as acid rain. Catalysts such as hydrogen peroxide, ozone, and ammonium help promote the formation of acids in clouds. More ammonium (NH4) can be formed when some of the acids are partially neutralized by airborne ammonia (NH3). Acidification increases with the number of active hydrogen (H+) ions dissolved in acid. Hydrocarbons emitted by, for example, car exhausts will react in sunlight with nitrogen oxides to produce ozone. Although it is invaluable in the atmosphere, low-level ozone causes respiratory problems and also hastens the formation of acid rain. When acid rain falls on the ground it dissolves and liberates heavy metals and aluminum (Al). When it is washed into lakes, aluminum irritates the outer surfaces of many fish. As acid rain falls or drains into the lake the pH of the lake falls. Forests suffer the effect of acid rain through damage to leaves, through the loss of vital nutrients, and through the increased amounts of toxic metals liberated by acid, which damage roots and soil microorganisms.

What is the text mainly about?

The most famous geyser in the world is Old Faithful in Yellow Park. Old Faithful erupts almost every hour, rising to a height of 125 to 170 feet and expelling more than ten thousand gallons during each eruption.

"... and expelling more than ten thousand gallons during each eruption." (Paragraph 2)

The underlined word is closest in meaning to ....

Global warming is a phenomenon used to describe the gradual increase in the temperature of Earth's atmosphere and oceans. Global warming is not a new problem lately people are acknowledging that we are facing a serious problem. Climate change is apparent everywhere.

Based on the text, we can conclude that global warming is ...

First of all, there is irrefutable evidence that human activities have changed the atmosphere of our earth. Since the time we have been industrializing, we started polluting our waters and air, and have been releasing greenhouse gases that contributing to global warming.

The main ideas of the paragraph is ...

Secondly, according to research by the Greenpeace organization, there is evidence of extensive deforestation being carried out in Indonesia and other tropical countries around the world. These forests are used to grow crops like palm sugar, palm oil, and coffee. The impact of climate change is noticeable throughout Asia Pacific. either during hot days or too much rain accompanied by wind and thunderstorm. This has started to affect the economy as well.

Which is NOT TRUE based on the text?

Secondly, according to research by the Greenpeace organization, there is evidence of extensive deforestation being carried out in Indonesia and other tropical countries around the world. These forests are used to grow crops like palm sugar, palm oil, and coffee. The impact of climate change is noticeable throughout Asia Pacific. either during hot days or too much rain accompanied by wind and thunderstorm. This has started to affect the economy as well.

The main ideas of the paragraph is ...

What is photosynthesis? Photosynthesis is a food-making process that occurs in green plants. It is the chief function of leaves. The word photosynthesis means putting together with light. Green plants use energy from light to combine carbon dioxide and water to make sugar and other chemical compounds.

How is the light used in photosynthesis?

The light used in photosynthesis is absorbed by a green pigment called chlorophyll. Each food-making cell in a plant leaf contains chlorophyll in small bodies called chloroplasts. In chloroplast, light energy causes water drawn form the soil to split into hydrogen and oxygen.

What are the steps of photosynthesis process? Let me tell you the process of photosynthesis, in a series of complicated steps, the hydrogen combines with carbon dioxide from the air, forming a simple sugar. Oxygen from the water molecules is given off in the process. From sugar together with nitrogen, sulphur, and phosporus from the soil-green plants can make starch, fat, protein, vitamins, and other complex compounds essential for life. Photosynthesis provides the chemical energy that is needed to produced these compounds.

What step after the hydrogen combines with carbon dioxide from the air …

What is photosynthesis? Photosynthesis is a food-making process that occurs in green plants. It is the chief function of leaves. The word photosynthesis means putting together with light. Green plants use energy from light to combine carbon dioxide and water to make sugar and other chemical compounds.

How is the light used in photosynthesis?

The light used in photosynthesis is absorbed by a green pigment called chlorophyll. Each food-making cell in a plant leaf contains chlorophyll in small bodies called chloroplasts. In chloroplast, light energy causes water drawn form the soil to split into hydrogen and oxygen.

What are the steps of photosynthesis process? Let me tell you the process of photosynthesis, in a series of complicated steps, the hydrogen combines with carbon dioxide from the air, forming a simple sugar. Oxygen from the water molecules is given off in the process. From sugar together with nitrogen, sulphur, and phosporus from the soil-green plants can make starch, fat, protein, vitamins, and other complex compounds essential for life. Photosynthesis provides the chemical energy that is needed to produced these compounds.

What are photosynthesis need …

What is photosynthesis? Photosynthesis is a food-making process that occurs in green plants. It is the chief function of leaves. The word photosynthesis means putting together with light. Green plants use energy from light to combine carbon dioxide and water to make sugar and other chemical compounds.

How is the light used in photosynthesis?

The light used in photosynthesis is absorbed by a green pigment called chlorophyll. Each food-making cell in a plant leaf contains chlorophyll in small bodies called chloroplasts. In chloroplast, light energy causes water drawn form the soil to split into hydrogen and oxygen.

What are the steps of photosynthesis process? Let me tell you the process of photosynthesis, in a series of complicated steps, the hydrogen combines with carbon dioxide from the air, forming a simple sugar. Oxygen from the water molecules is given off in the process. From sugar together with nitrogen, sulphur, and phosporus from the soil-green plants can make starch, fat, protein, vitamins, and other complex compounds essential for life. Photosynthesis provides the chemical energy that is needed to produced these compounds.

What the product of photosynthesis …

What is photosynthesis? Photosynthesis is a food-making process that occurs in green plants. It is the chief function of leaves. The word photosynthesis means putting together with light. Green plants use energy from light to combine carbon dioxide and water to make sugar and other chemical compounds.

How is the light used in photosynthesis?

The light used in photosynthesis is absorbed by a green pigment called chlorophyll. Each food-making cell in a plant leaf contains chlorophyll in small bodies called chloroplasts. In chloroplast, light energy causes water drawn form the soil to split into hydrogen and oxygen.

What are the steps of photosynthesis process? Let me tell you the process of photosynthesis, in a series of complicated steps, the hydrogen combines with carbon dioxide from the air, forming a simple sugar. Oxygen from the water molecules is given off in the process. From sugar together with nitrogen, sulphur, and phosporus from the soil-green plants can make starch, fat, protein, vitamins, and other complex compounds essential for life. Photosynthesis provides the chemical energy that is needed to produced these compounds.

What kind of the text …

Silkworms live for only two or three days after laying eggs. About 36,000 to 50,000 eggs are laid, and these are carefully stored at the silkworm farm until they are ready to hatch. The eggs hatch into caterpillars, which feed on mulberry leaves. Soon, the caterpillars are ready to spin their cocoons. Not all caterpillars can spin silk cocoons. Only the caterpillars of a silkworm moth known as ‘Bombyx mari’ can do such spinning. This caterpillar has special glands which secrete liquid silk through its lower lip. The liquid produced later hardens to form tine strands.

The caterpillar makes its cocoons using these strands. The threads on the outside of the cocoon are rough, while those inside are soft and smooth.

Some fully-spun cocoons are heated. This kills the pupa inside. The cocoons are then put into hot water to loosen the fine threads. Finally, these threads are reeled off the cocoons.

The length of unbroken thread produced by a single cocoon measures about one-and-a-half kilometers. Being twisted together several of these threads make single woven materials.

What is the purpose of the text ……..

Silkworms live for only two or three days after laying eggs. About 36,000 to 50,000 eggs are laid, and these are carefully stored at the silkworm farm until they are ready to hatch. The eggs hatch into caterpillars, which feed on mulberry leaves. Soon, the caterpillars are ready to spin their cocoons. Not all caterpillars can spin silk cocoons. Only the caterpillars of a silkworm moth known as ‘Bombyx mari’ can do such spinning. This caterpillar has special glands which secrete liquid silk through its lower lip. The liquid produced later hardens to form tine strands.

The caterpillar makes its cocoons using these strands. The threads on the outside of the cocoon are rough, while those inside are soft and smooth.

Some fully-spun cocoons are heated. This kills the pupa inside. The cocoons are then put into hot water to loosen the fine threads. Finally, these threads are reeled off the cocoons.

The length of unbroken thread produced by a single cocoon measures about one-and-a-half kilometers. Being twisted together several of these threads make single woven materials.

How are the threads on the outside of the cocoon ……..

Silkworms live for only two or three days after laying eggs. About 36,000 to 50,000 eggs are laid, and these are carefully stored at the silkworm farm until they are ready to hatch. The eggs hatch into caterpillars, which feed on mulberry leaves. Soon, the caterpillars are ready to spin their cocoons. Not all caterpillars can spin silk cocoons. Only the caterpillars of a silkworm moth known as ‘Bombyx mari’ can do such spinning. This caterpillar has special glands which secrete liquid silk through its lower lip. The liquid produced later hardens to form tine strands.

The caterpillar makes its cocoons using these strands. The threads on the outside of the cocoon are rough, while those inside are soft and smooth.

Some fully-spun cocoons are heated. This kills the pupa inside. The cocoons are then put into hot water to loosen the fine threads. Finally, these threads are reeled off the cocoons.

The length of unbroken thread produced by a single cocoon measures about one-and-a-half kilometers. Being twisted together several of these threads make single woven materials.

What are mulberry leaves for ……..