general science

• The ozone layer protects life on earth from ultraviolet radiation.
• An asteroid is a small rocky object orbiting the Sun.
• A planet is an astronomical body that orbits around a star, such as Earth.
• The sun is the largest object in our solar system.
• The moon is a natural satellite that revolves around the earth.
• Observation is the first step of the scientific method, where researchers gather information about a phenomenon.
• Oxygen is the most abundant gas in the atmosphere, making up about 21% of its volume.
• Nitrogen makes up approximately 78% of the Earth's atmosphere by volume.
• Carbon dioxide (CO2) is an important greenhouse gas that contributes to global warming.
• A comet is a celestial body made up of ice, dust, and gas.
• A comet is an ice-covered celestial body that orbits the sun, leaving behind a trail of gas and dust as it moves through space.
• The moon is the only natural satellite of the Earth.
• A meteorite is a solid piece of space debris that enters the atmosphere and falls to Earth's surface.
• A meteorite is a solid piece of matter that enters Earth's atmosphere at high speed and burns up due to friction with air molecules.
• Meteors are streaks of light seen in the sky when a meteorite burns up upon entering the Earth's atmosphere.
• Venus is known as the "morning star" because it appears brightly in the morning sky.
• Meteors are bright streaks of light seen in the sky when a meteorite enters Earth's atmosphere.
• Hypothesis is a tentative explanation based on observations.
• The ionosphere is located between 60-1000 km above the surface of the Earth.
• Earth's atmosphere consists mainly of nitrogen (78%) and oxygen (21%).
• Mercury is named after the Roman messenger god Mercurius.
• The troposphere is the lowest part of the atmosphere where weather occurs.
• Experiment involves testing hypotheses through controlled experiments to determine if they are true.
• Nitrogen makes up approximately 78% of the air we breathe.
• Data refers to facts collected during research.
• Carbon dioxide (CO2) is a colorless gas that plays a crucial role in regulating the temperature of the Earth's surface.
• Water vapor (H20) is also considered a greenhouse gas due to its ability to trap heat within the Earth's atmosphere.
• Meteoroids are small objects that enter the Earth's atmosphere at high speeds and burn up due to friction with air molecules.
• Methane (CH4) is a potent greenhouse gas with over 30 times more warming potential than carbon dioxide on a per-molecule basis.
• Methane (CH4) is a potent greenhouse gas with over 30 times more warming potential than CO2.
• The Sun is the source of energy for plants, which are then consumed by animals.
• The moon has no atmosphere and is covered with craters formed from meteorite impacts.
• A planet is a celestial body that orbits a star and has sufficient mass to be spherical in shape.
• An asteroid is a large rocky object orbiting the sun.
• Water vapor (H2O) is a naturally occurring greenhouse gas that contributes to global warming.
• Meteors are small rocks or debris that enter the earth's atmosphere at high speeds and burn up due to friction.
• Comets are celestial bodies composed mainly of ice, dust, and gases.
• Comets are celestial bodies composed mainly of ice, dust, and gases that emit a bright tail when they approach the Sun.
• Asteroids are small, rocky objects that orbit the Sun and can be found between Mars and Jupiter.
• Saturn has rings made of ice particles orbiting around it.