There are eight planets in the Solar System, and each one is very different. Some planets, like Jupiter and Saturn are very large. Others, like Mercury and Mars are smaller. Jupiter has moons that are larger than Mercury. The planets also have different atmospheres. Uranus, Jupiter and Saturn have atmospheres of hydrogen and helium. The atmosphere on Venus is made up of carbon dioxide. Earth has a nitrogen and oxygen atmosphere. Neptune’s atmosphere is mostly hydrogen. The planets also have different temperatures. Uranus is the coldest and Venus is the hottest. What is the main idea?

He spent all that day roaming over the house. He nearly drowned himself in the bathtubs, put his nose into the ink on a writing table, and burned it on the end of the big man’s cigar, for he climbed up in the big man’s lap to see how writing was done. At nightfall he ran into Teddy’s nursery to watch how kerosene lamps were lighted, and when Teddy went to bed Rikki-tikki climbed up too. But he was a restless companion, because he had to get up and attend to every noise all through the night, and find out what made it. What is the main idea?

Dolphins are mammals that live in the ocean. Mammals are different than fish, reptiles or birds. As a mammal, dolphins breathe oxygen, even though they live in water. Because they are mammals, a dolphin mother gives birth to a live baby, unlike reptiles and birds who lay eggs. A dolphin mother also feeds her baby milk like other mammals. What is the main idea?

In 1803, President Thomas Jefferson completed a treaty with the French government to purchase a large section of land in North America. This land is now known as the Louisiana Purchase. The purchase was important to the future of the U.S. It was the first major expansion of the U.S. since it had won its independence from Great Britain 20 years earlier. The territory gained in the Louisiana Purchase was the largest in U.S. history, totalling 828,000 squares miles, about 23% of the current U.S. land area. The Louisiana Purchase also secured the U.S.’s right to passage along the Mississippi River and allowed access to the important port of New Orleans. What is the main idea?

Even with eyes protected by the green spectacles, Dorothy and her friends were at first dazzled by the brilliancy of the wonderful City. The streets were lined with beautiful houses all built of green marble and studded everywhere with sparkling emeralds. They walked over a pavement of the same green marble, and where the blocks were joined together were rows of emeralds, set closely, and glittering in the brightness of the sun. The window panes were of green glass; even the sky above the City had a green tint, and the rays of the sun were green. What is the main idea?

It was a library. High pieces of furniture, of black violet ebony inlaid with brass, supported upon their violet ebony inlaid with brass, supported upon their wide shelves a great number of books uniformly wide shelves a great number of books uniformly bound. They followed the shape of the room, terminating at the lower part in huge bound. They followed the shape of the room, terminating at the lower part in huge divans, covered with brown leather, which were curved, to afford the greatest divans, covered with brown leather, which were curved, to afford the greatest comfort. Light movable desks, made to slide in and out at will, allowed one to comfort. Light movable desks, made to slide in and out at will, allowed one to rest one’s book while reading. In the centre stood an immense table, covered with rest one’s book while reading. In the centre stood an immense table, covered with pamphlets, amongst which were some newspapers, already of old date. The electric pamphlets, amongst which were some newspapers, already of old date. The electric light fl ooded everything; it was shed from four unpolished globes half sunk in the light fl ooded everything; it was shed from four unpolished globes half sunk in the volutes of the ceiling. I looked with real admiration at this room, so ingeniously fitted up, and I could scarcely believe my eyes. What is the main idea?

While Benjamin Franklin is known as a statesman and diplomat, he was also an accomplished inventor and scientist. Franklin was mainly a printer by profession, but he also investigated natural phenomena, such as ocean currents and lightning. His marine research led to his publication of a map of the Gulf Stream currents. Franklin developed theories about electricity, made famous by his experiment with a kite and a key during a lightning storm. As a result of his work with electricity, Franklin invented the lightning rod, which protected buildings from lightning strikes. Always curious and imaginative, Franklin also invented the bifocal glasses, the Franklin stove, an odometer for carriages and a musical instrument called a glass armonica. He investigated evaporation as a cooling technique and designed nautical enhancements, including watertight compartments. What is the main idea?

For some people Christmas and the New Year are very merry times; but for cabmen and Year are very merry times; but for cabmen and Year are very merry times; but for cabmen and cabmen’s horses it is no holiday, though it may cabmen’s horses it is no holiday, though it may be a harvest. There are so many parties, balls, be a harvest. There are so many parties, balls, and places of amusement open that the work and places of amusement open that the work is hard and often late. Sometimes driver and is hard and often late. Sometimes driver and horse have to wait for hours in the rain or frost, horse have to wait for hours in the rain or frost, shivering with the cold, while the merry people shivering with the cold, while the merry people within are dancing away to the music. I wonder within are dancing away to the music. I wonder if the beautiful ladies ever think of the weary if the beautiful ladies ever think of the weary cabman waiting on his box, and his patient cabman waiting on his box, and his patient beast standing, till his legs get stiff with cold. beast standing, till his legs get stiff with cold. What is the main idea?

Laurie lay luxuriously swinging to and fro in his hammock one warm September afternoon, wondering what his neighbors were about, but too lazy to go and find out. He was in one of his moods, for the day had been both unprofitable and unsatisfactory, and he was wishing he could live it over again. The hot weather made him indolent, and he had shirked his studies, tried Mr. Brooke’s patience to the utmost, displeased his grandfather by practicing half the afternoon, frightened the maidservants half out of their wits by mischievously hinting that one of his dogs was going mad, and, after high words with the stableman about some fancied neglect of his horse, he had flung himself into his hammock to fume over the stupidity of the world in general, till the peace of the lovely day quieted him in spite of himself. Staring up into the green gloom of the horse-chestnut trees above him, he dreamed dreams of all sorts, and was just imagining himself tossing on the ocean in a voyage round the world, when the sound of voices brought him ashore in a fl ash. Peeping through the meshes of the hammock, he saw the Marches coming out, as if bound on some expedition. What is the main idea?

BUT there was no hilarity in the little town that same tranquil Saturday afternoon. The Harpers, and Aunt Polly’s family, were being put into mourning, with great grief and many tears. An unusual quiet possessed the village, although it was ordinarily quiet enough, in all conscience. The villagers conducted their concerns with an absent air, and talked little; but they sighed often. The Saturday holiday seemed a burden to the children. They had no heart in their sports, and gradually gave them up. What is the main idea?

The Constitution of the U.S. has been amended several times to allow more citizens the right to vote. The 15th Amendment, ratified in 1870, extended voting rights to former slaves. The 19th Amendment, ratified in 1920, gave women the right to vote. In 1971, the 26th Amendment granted voting rights to those 18 years and older, changing the requirement that voters must be 21 years old. What is the main idea?

Soccer is know in some countries as football. It is a popular sport across the world, with over 200 countries playing the sport. It is estimated that over 250 million people, both men and women, play soccer. The sport has been part of the Olympic games from 1900 to 1928 and from 1936 to today. What is the main idea?

As important as water conservation is, it is also very easy. A few simple habits can significantly reduce the water consumption of a household. One way to save water is to turn off the faucet when reduce the water consumption of a household. One way to save water is to turn off the faucet when brushing your teeth. Also, don’t allow faucets to drip; one drip can waste a large amount of water over a short period of time. Baths require less water than showers, so by taking a bath instead of a shower, you can reduce the amount of water your home uses. In the kitchen, running a dishwasher when it is completely full, rather than half full, can save up to 20 gallons a day. These simple changes will save water and save money. What is the main idea?

One the most popular musical instruments is the piano. In the traditional musical instrument classification system of string, woodwind, percussion and brass, the piano falls into two categories. It is considered a string instrument because the sound comes from the strings inside the piano. It is also considered a percussion instrument, since the player strikes the keyboard, which signals an internal hammer to strike the strings. What is the main idea?

Irish immigration to the U.S. began during the early development of the American colonies. It is estimated that 200,000 Irish came to the U.S. in the 17th and 18th centuries. The numbers swelled from 1820 to 1850 to almost 2 million Irish immigrants. Most of these were fleeing the potato famine from 1845 until 1852. Steady numbers continued to arrive during the late 19th and 20th centuries. Today, over 36 million Americans claim some level of Irish ancestry. What is the main idea?

Sandy sings in the church choir. She sings a

solo every week. Everyone looks forward to

hearing her sing. Last Sunday Mrs. Smith said,

“Sandy has the voice of an angel.” We all agreed

with her. I think she will be famous one day. What is the main idea?

Tommy ran down the street chasing his dog. “Bobby! Bobby!” he yelled. He knew he should have checked the gate before letting Bobby into the back yard. His mother has told him a hundred times. How had he forgotten? If he had closed it, Bobby would still be in the back yard. What is the main idea?

Joy sat on the bench at the baseball field and waited. She didn’t like waiting alone. All of the other kids had been picked up by their parents. Where was her mother? Suddenly, her mother came running to her. “Oh Joy, I’m so sorry. Next time I will make myself a note.” What is the main idea>

I went to the ice cream shop and ate a huge sundae. When I got home, supper was ready. Mom had cooked my favorite meal. No matter how I tried, I couldn’t make myself eat. What is the main idea?