Why are the nuclei of some atoms unstable?
In some atoms the binding energy is not strong enough to hold the nucleus together, and the nuclei of these atoms are said to be unstable. Unstable atoms will lose neutrons and protons as they attempt to become stable.
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In some atoms the binding energy is not strong enough to hold the nucleus together, and the nuclei of these atoms are said to be unstable. Unstable atoms will lose neutrons and protons as they attempt to become stable.
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Why is it called a wisdom tooth?
Wisdom teeth are called wisdom teeth because they erupt (emerge) into the mouth when people are in their late teens or early twenties, affectionately termed the “Age of Wisdom.” Wisdom teeth are technically referred to as third molars, and they're just like all the other teeth in your mouth.
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Wisdom teeth are called wisdom teeth because they erupt (emerge) into the mouth when people are in their late teens or early twenties, affectionately termed the “Age of Wisdom.” Wisdom teeth are technically referred to as third molars, and they're just like all the other teeth in your mouth.
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Can trees explode from freezing?
Cold weather will cause some trees to explode by freezing the sap, because it contains water, which expands as it freezes, creating a sound like a gunshot. The sound is produced as the tree bark splits, with the wood contracting as the sap expands.
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Cold weather will cause some trees to explode by freezing the sap, because it contains water, which expands as it freezes, creating a sound like a gunshot. The sound is produced as the tree bark splits, with the wood contracting as the sap expands.
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What does the Mohs scale measure?
Mohs scale is used to measure the relative hardness of a mineral by its resistance to scratching. From softest to hardest, the ten minerals of the Mohs scale are talc (measuring 1 on the scale), gypsum, calcite, fluorite, apatite, orthoclase, quartz, topaz, corundum, and diamond (measuring 10 on the scale).
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Mohs scale is used to measure the relative hardness of a mineral by its resistance to scratching. From softest to hardest, the ten minerals of the Mohs scale are talc (measuring 1 on the scale), gypsum, calcite, fluorite, apatite, orthoclase, quartz, topaz, corundum, and diamond (measuring 10 on the scale).
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How hot does it get on Mars?
The temperature on Mars may reach a high of about 70 degrees Fahrenheit (20 degrees Celsius) at noon, at the equator in the summer, or a low of about -225 degrees Fahrenheit (-153 degrees Celsius) at the poles.
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The temperature on Mars may reach a high of about 70 degrees Fahrenheit (20 degrees Celsius) at noon, at the equator in the summer, or a low of about -225 degrees Fahrenheit (-153 degrees Celsius) at the poles.
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Do snakes have a good sense of smell?
Most snakes have an excellent sense of smell, in part to make up for their poor eyesight and limited hearing. Rather than a conventional nose, however, snakes sniff with an organ at the roof of the mouth called a Jacobson's organ, which is also found in a few lizard species.
@askmenow
Most snakes have an excellent sense of smell, in part to make up for their poor eyesight and limited hearing. Rather than a conventional nose, however, snakes sniff with an organ at the roof of the mouth called a Jacobson's organ, which is also found in a few lizard species.
@askmenow
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How does a plant loses water?
Plants lose gallons of water every day through the process of transpiration, the evaporation of water from plants primarily through pores in their leaves. Up to 99% of the water absorbed by roots is lost via transpiration through plant leaves.
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Plants lose gallons of water every day through the process of transpiration, the evaporation of water from plants primarily through pores in their leaves. Up to 99% of the water absorbed by roots is lost via transpiration through plant leaves.
@askmenow
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What does fire in the hole mean?
"Fire in the hole" is a warning that an explosive detonation in a confined space is imminent. It originated with miners, who needed to warn their fellows that a charge had been set.
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"Fire in the hole" is a warning that an explosive detonation in a confined space is imminent. It originated with miners, who needed to warn their fellows that a charge had been set.
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Which animal sleeps about 20 hours a day?
The sleepiest animal in the world is the koala, who sleeps 22 hours a day. Next is the sloth (20 hours), armadillo and opossum (tied at 19 hours each), lemur (16 hours), then hamster and squirrel (tied at 14 hours each).
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The sleepiest animal in the world is the koala, who sleeps 22 hours a day. Next is the sloth (20 hours), armadillo and opossum (tied at 19 hours each), lemur (16 hours), then hamster and squirrel (tied at 14 hours each).
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What is the chemical in diapers?
Some brands enhance the inner lining with aloe and vitamin E, skin-friendly compounds that are often found in diaper rash creams. The absorbent center contains wood pulp and super-absorbent polymers, usually sodium polyacrylate.
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Some brands enhance the inner lining with aloe and vitamin E, skin-friendly compounds that are often found in diaper rash creams. The absorbent center contains wood pulp and super-absorbent polymers, usually sodium polyacrylate.
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Is the tongue a muscle or an organ?
The tongue is a muscular organ in the mouth. The tongue is covered with moist, pink tissue called mucosa. Tiny bumps called papillae give the tongue its rough texture. Thousands of taste buds cover the surfaces of the papillae.
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The tongue is a muscular organ in the mouth. The tongue is covered with moist, pink tissue called mucosa. Tiny bumps called papillae give the tongue its rough texture. Thousands of taste buds cover the surfaces of the papillae.
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How many moons does Saturn have?
The moons of Saturn are numerous and diverse ranging from tiny moonlets less than 1 kilometer across to the enormous Titan which is larger than the planet Mercury. Saturn has 62 moons with confirmed orbits, 53 of which have names and only 13 of which have diameters larger than 50 kilometers.
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The moons of Saturn are numerous and diverse ranging from tiny moonlets less than 1 kilometer across to the enormous Titan which is larger than the planet Mercury. Saturn has 62 moons with confirmed orbits, 53 of which have names and only 13 of which have diameters larger than 50 kilometers.
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How does a lunar eclipse occur?
Solar and lunar eclipses are dependent on the alignment of the sun, moon and Earth. When the moon is aligned exactly between the Earth and the sun, the shadow of the moon blocks the sun from view. A lunar eclipse occurs when the moon passes into the shadow of the Earth.
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Solar and lunar eclipses are dependent on the alignment of the sun, moon and Earth. When the moon is aligned exactly between the Earth and the sun, the shadow of the moon blocks the sun from view. A lunar eclipse occurs when the moon passes into the shadow of the Earth.
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Can komodo dragons reproduce asexually?
The Komodo dragon, turns out, can do both: they can reproduce sexually or asexually depending on their environmental conditions. At most zoos, females live alone and are kept separate from other dragons.
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The Komodo dragon, turns out, can do both: they can reproduce sexually or asexually depending on their environmental conditions. At most zoos, females live alone and are kept separate from other dragons.
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Is aluminum recyclable?
The consumer throws aluminium cans and foil into a recycle bin. The aluminium is then collected and taken to a treatment plant. In the treatment plant the aluminium is sorted and cleaned ready for reprocessing.
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The consumer throws aluminium cans and foil into a recycle bin. The aluminium is then collected and taken to a treatment plant. In the treatment plant the aluminium is sorted and cleaned ready for reprocessing.
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Who are the kings in a deck of cards?
The four kings, for example, are based on real rulers: the king of diamonds represents the wealthy Julius Caesar; the king of clubs is the brutal Alexander the Great; the king of spades represents the strong but kind David of Israel; and the king of Hearts represents the emotionally disturbed Charles VII of France.
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The four kings, for example, are based on real rulers: the king of diamonds represents the wealthy Julius Caesar; the king of clubs is the brutal Alexander the Great; the king of spades represents the strong but kind David of Israel; and the king of Hearts represents the emotionally disturbed Charles VII of France.
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How are diamonds formed?
Most natural diamonds are formed at high temperature and pressure at depths of 140 to 190 kilometers (87 to 118 mi) in the Earth's mantle. Carbon-containing minerals provide the carbon source, and the growth occurs over periods from 1 billion to 3.3 billion years (25% to 75% of the age of the Earth).
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Most natural diamonds are formed at high temperature and pressure at depths of 140 to 190 kilometers (87 to 118 mi) in the Earth's mantle. Carbon-containing minerals provide the carbon source, and the growth occurs over periods from 1 billion to 3.3 billion years (25% to 75% of the age of the Earth).
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How do the atoms in a water molecule stick together?
Hydrogen Bonding. When water molecules align with each other, a weak bond is established between the negatively charged oxygen atom of one water molecule and the positively charged hydrogen atoms of a neighboring water molecule.
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Hydrogen Bonding. When water molecules align with each other, a weak bond is established between the negatively charged oxygen atom of one water molecule and the positively charged hydrogen atoms of a neighboring water molecule.
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How many time zones are there?
Given a 24-hour day and 360 degrees of longitude around the Earth, it is obvious that the world's standard time zones have to be 15 degrees wide, on average. Some sources claim there are 24 standard time zones, while others say there are 25 time zones.
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Given a 24-hour day and 360 degrees of longitude around the Earth, it is obvious that the world's standard time zones have to be 15 degrees wide, on average. Some sources claim there are 24 standard time zones, while others say there are 25 time zones.
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What causes your heart to beat?
The electrical system of your heart is the power source that makes this possible. The impulse starts in a small bundle of specialized cells located in the right atrium, called the SA node. The electrical activity spreads through the walls of the atria and causes them to contract. This forces blood into the ventricles.
@askmenow
The electrical system of your heart is the power source that makes this possible. The impulse starts in a small bundle of specialized cells located in the right atrium, called the SA node. The electrical activity spreads through the walls of the atria and causes them to contract. This forces blood into the ventricles.
@askmenow