Science

Refine Search

What types of information about space are interesting to children?

More interesting solar system information for kids includes the number of objects that go around the sun, the reason why these objects orbit around the sun and when the solar system was formed. Objects that orbit the sun are the eight planets, asteroids, comets, meteoroids and moons. These objects orbit the sun because of the sun's gravity. Scientists believe that the solar system was formed over 4.6 billion years ago.\nThere are many moons in the solar system. Planet earth has one moon, Venus and Mars have no moons while the rest of the other planets combined have more than 160 moons. Th..

Continue Reading

How do humans survive in a rainforest?

Heat and humidity are a major source of danger for humans trying to survive in a rainforest. Prolonged exposure without adequate hydration and shelter or other shielding can rapidly lead to heat exhaustion, heat stroke and dehydration. It is essential that a source of fresh water be located immediately on arrival in the rainforest, and that measures be taken to render all collected water safe for consumption.\nRainforests harbor a number of different and deadly tropical diseases, such as malaria, yellow fever, dengue fever, hookworms and more. Flies, mosquitoes and other insects are major sour..

Continue Reading

How are sedimentary rocks made?

Sedimentary rocks begin as sand, mud, clay or even organic material; the type of material determines the specific type of sedimentary rock. The material breaks away through weathering as erosion carries and deposits the material in another location. Over time, these materials pack together and pressure builds. With pressure comes low-level heat, approximately 200 degrees Fahrenheit. The combination of pressure and heat cements the material together to form solid rock. Sand forms sandstone while clay forms shale. Limestone originates from the remains of dead sea life.\nThere are three basic typ..

Continue Reading

What is chromatin made of?

Chromatin has several functions, including condensing DNA to allow it to fit into the cell, facilitating the control of expression and strengthening the DNA to allow it to undergo mitosis and meiosis. There are two forms of chromatin, euchromatin and heterochromatin. Euchromatin is less condensed and can be transcribed. Heterochromatin is highly condensed and is usually not transcribed.

Continue Reading

What part of the flower contains the female reproductive system?

During fertilization, pollen, or male reproductive cells, land on the stigma. From there, it travels to the ovary where it fertilizes the egg, called an ovule. Once an ovule is fertilized, it turns into a seed.None of this would be possible without a flower's petals. The petals are usually brightly colored and often fragrant, attracting the attention of pollinators like bees and butterflies. Insects like these carry pollen from plant to plant, providing the pollen used to create new seeds, and eventually, new plants.

Continue Reading

What is a calorimeter equation?

Q = mwater•Cwater•ΔTwater is an example of a calorimeter equation used to measure the change in water temperature upon losing or gaining energy. A calorimeter is a device used to measure the quantity of heat transferred to or from an object. In high school science classes, students use coffee cup calorimeters in laboratories to demonstrate calorimetry principles.

Continue Reading

How are paper towels affecting the environment?

The environmental cost of paper towels begins with the fossil fuels used to power the machinery for harvesting trees and to transport the trees to the paper mill. Manufacturing paper is energy-intensive and also carries the risk of harmful emissions into nearby waterways. The paper towels then require transport to the point of use, consuming more fossil fuels. Using recycled materials lowers the energy cost of manufacturing, but paper towels themselves usually enter the trash stream after just one use. Restrooms using paper towels usually have to be cleaned more often, resulting in increased u..

Continue Reading

Is KH2PO4 an acid or a base?

Monopotassium phosphate is known by several other names, such as acid potassium phosphate, potassium dihydrogen phosphate, monobasic potassium phosphate and potassium biphosphate. It is commonly in the form of a white, colorless crystalline powder. Monopotassium phosphate is used as a buffering agent in regulating pH levels of certain solutions and in reducing the escape of ammonia in fertilizers. It is also used as a fungicide, fertilizer and as a food supplement. It is one of the primary ingredients of the beverage Gatorade.

Continue Reading

What is a change from one form of energy into another called?

The different types of energy include chemical, heat, electrical, kinetic, potential and nuclear energy. Chemical energy has to do with the bonds that hold a substance together and is released by any chemical reaction. Heat energy is when the metabolic body processes release energy. Kinetic energy is the energy of an object in motion while potential energy is the possible energy an object has while it is at rest. Kinetic and potential energy can convert into one another depending on the state of an object. Nuclear energy is the energy in the nucleus of the atom and can be tapped through fissio..

Continue Reading

How long does it take to get into outer space?

The shortest distance between Mars and Earth is when Mars is close to the sun while the Earth is further away, putting them 33.9 million miles apart. Unfortunately, this has never before happened in recorded history. The closest distance between the two planets occurred in 2003 when they were 34.8 million miles apart. When the two planets are at their farthest points from the sun, the distance becomes 250 million miles. The average distance is 140 million miles. It is estimated that NASA's New Horizons, the fastest spacecraft, would take 39 to 289 days to reach Mars, depending on the posi..

Continue Reading
Showing 2641 to 2650 of 10000 (1000 Pages)