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how long can u stay on the moon

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Can we present these  slide
-Jaidyn Mora

No

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How do we get our class to SHUT UP ( 3rd period)

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When you take a nap it's 2-3 hours and when you sleep it's 10 hours. Why are these sleep patterns different?

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why do other planets have moons.

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how are planets and dwarf planets different if

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if a planets

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if you use a planets atmosphere for speed up a rocket ship wouldn't that do the same for asteroids

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When our sun gets to big what happens to it these it start the cycle over?

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Are we going to the science lab any time soon

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If there is other life on other planets will there be considerd aliens

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If there is other life on other planets will there be considerd aliens

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Response:
BY definition, "alien" means a : belonging or relating to another person, place, or thing : strange

an alien environment

(https://www.merriam-webster.com/dictionary/alien)

If life is on another planet, and we visit there, then we would be the aliens.  If they visit us, then they would be the aliens.

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i found this interesting website i think you should check it out

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The four inner planets -- Mercury, Venus, Earth and Mars -- share several features in common. Astronomers call them the "terrestrial planets" because they have solid, rocky surfaces roughly similar to desert and mountainous areas on the earth. The inner planets are much smaller than Jupiter, Saturn, Uranus and Neptune, and they all possess iron cores.

TL;DR (Too Long; Didn't Read)

Inner planets are much smaller than the outer planets, and are rocky with an iron core.

Astronomers theorize that the very early solar system formed as a ring of materials surrounding the sun. Heavier elements such as iron and nickel condensed relatively close to the sun, whereas substances such as hydrogen, methane and water condensed in colder regions farther out. The terrestrial planets formed as clumps of rock and heavy elements from the inner ring of materials accumulated due to gravitational attraction; in a similar way, the outer band of gaseous substances produced the outer planets.

Compared to the four gas giant planets that make up the outer solar system, the inner planets all have diminutive sizes. Of the four, Earth is the largest, with a diameter of 6,378 kilometers (3,963 miles) at the equator. Venus is a close second at 6,051 kilometers (3,760 miles). Mars is much smaller with a 3,396-kilometer (2,110-mile) diameter, and Mercury is the smallest terrestrial planet, measuring 2,439 kilometers (1,516 miles) across.

The terrestrial planets all have rocky surfaces that feature mountains, plains, valleys and other formations. The temperatures of the inner planets are low enough that rock exists mostly as a solid at the surface. To different degrees, they also have meteor impact craters, although the dense atmospheres of Venus and Earth protect them from most meteors, and weathering and other factors wipe out all but the most recent craters. Mars has very low atmospheric pressure, and Mercury has almost none, so craters are more common on these planets.

Astronomers believe all four of the terrestrial planets possess an iron core. During their early formation, the planets were hot blobs of molten metals and other elements; being heavier, most of the iron and nickel ended up on the inside with lighter elements such as silicon and oxygen forming the outside. Geologists have concluded that the earth's iron core is partly liquid and partly solid by observing the behavior of earthquake waves traveling through the earth. Scientists speculate that the other terrestrial planets may also have partly liquid cores.

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Three Major Characteristics of the Inner Planets

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The four inner planets -- Mercury, Venus, Earth and Mars -- share several features in common. They have solid, rocky surfaces roughly similar to desert and mountainous areas on the earth. The inner planets are much smaller than Jupiter, Saturn, Uranus and Neptune, and they all possess iron cores.

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Do you know were the aliens are founded.

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Do we know about planet X yet if yes then when will we be able to talk about it. If not then when will planet X be a planet

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Do we know about planet X yet if yes then when will we be able to talk about it. If not then when will planet X be a planet

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https://solarsystem.nasa.gov/planets/planetx

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how does the ozone layer heal itself.

Response:

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Scientists launch an ozonesonde, a balloon that carries ozone measuring equipment, at the South Pole.

Credit: World Meteorological Organization/Flickr

More than 30 years after scientists first spotted a hole in the atmosphere's protective ozone layer over the South Pole, they are seeing the "first fingerprints of healing," researchers reported today (June 30).

Measurements of the ozone hole taken in September revealed the breach has shrunk by more than 1.5 million square miles (4 million square kilometers) - about half the area of the contiguous United States - since 2000.

The researchers attributed the ozone's recovery to the continuing decline of atmospheric chlorine originating from chlorofluorocarbons (CFCs). These chemical compounds, once commonly used in aerosols, dry cleaning and refrigerators, were banned when nations around the world signed the Montreal Protocol in 1987 in an effort to repair the ozone hole. [ Image Gallery: Life at the South Pole]

"We can now be confident that the things we've done have put the planet on a path to heal," lead author Susan Solomon, an atmospheric chemist at the Massachusetts Institute of Technology (MIT), said in a statement. "We got rid of them [CFCs], and now we're seeing the planet respond."

The ozone layer, which extends from 2 to 19 miles (20 to 30 km) above Earth's surface, protects the planet from the sun's harmful ultraviolet rays. Thinning of ozone, which is a molecule made up of three oxygen atoms, can occur due to exposure to certain chemicals, like CFCs.

The ozone hole, a region of thinned ozone, was discovered in 2000, when scientists noticed that the total ozone above Antarctica in October was dropping. From then on, ozone depletion was typically tracked using October measurements.

That's because the ozone hole varies seasonally, as specific conditions are needed for chlorine to eat away at the molecule, Diane Ivy, a research scientist at MIT and co-author on the new study, explained to Live Science in an email. Chlorine interacts with ozone in this destructive way only if light is present and the atmosphere is cold enough for polar stratospheric clouds to form. The clouds are the surfaces which these chlorine reactions can occur.

Ozone depletion therefore starts each year in late August, as Antarctica emerges from winter, with the hole fully formed by early October.

For their research, the scientists thought a clearer picture of chlorine's effects on the ozone would be seen by monitoring ozone levels in September.

"I think people, myself included, had been too focused on October, because that's when the ozone hole is enormous, in its full glory," Solomon said. "But October is also subject to the slings and arrows of other things that vary, like slight changes in meteorology. September is a better time to look, because chlorine chemistry is firmly in control of the rate at which the hole forms at that time of year."

There is still a long road to recovery for the ozone hole, the researchers said. The molecules that deplete ozone have very long life spans, and the study scientists estimate it will still be decades before complete recovery.

"We won't get back to pre-ozone-hole conditions for another 40-some years," study co-author Douglas Kinnison, a scientist at the National Center for Atmospheric Research in Colorado, told Live Science.

But scientists have seen healing of the ozone, which Ivy defined as "an identifiable increase in ozone that is linked to reduced amounts of ozone-depleting substances."

However, the hole itself may fluctuate each year in the healing process, due, in part, to volcanic activity. Eruptions emit sulfur dioxide, which can form aerosols in the stratosphere, allowing more ozone depletion to occur.

For instance, in 2015 the ozone hole neared a record-breaking size. Due to the April 2015 eruption of Calbuco in Chile, it was "a whopper of an ozone hole" that year, Kinnison said.

"So we probably will see a much less severe ozone hole [this year]," he said. "But we'll have to wait and see."

Original article on Live Science.

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Antarctic Ozone Hole Shows 1st Signs of Healing

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More than 30 years after scientists first spotted a hole in the atmosphere's protective ozone layer over the South Pole, they are seeing the "first fingerprints of healing," researchers reported today (June 30).

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What is the foods that use chemicals to be made?

Response:
https://teara.govt.nz/en/diagram/8960/photosynthesis-and-chemosynthesis

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photosynthesis and chemosynthesis for kids! easy educational audio visual flash card for kids!

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Photosynthesis and Chemosynthesis for Kids! EASY educational audio visual flash card for kids!

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Photosynthesis and Chemosynthesis for Kids! EASY educational audio visual flash card for kids!

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Who will be the first to be curious?