Explanation

• If a human-made (artificial) body moves around a celestial body it is called an artificial satellite.
• Artificial satellites are objects placed into orbit around celestial bodies by humans for purposes such as communication, weather monitoring, and scientific research.

Explanation

• Jupiter is largest planet.
• It's a very stormy planet.
• It has great red spot.
• It has largest moon; ganymede.
• It was discovered by Galileo in 16th century.

Explanation

• The majority of known asteroids orbit within the asteroid belt between Mars and Jupiter, generally with not very elongated orbits.

  Asteroids are the rocky remnants of material leftover from the formation of the solar system and its planets approximately 4.6 billion years ago.

  
  

Explanation

• Vesta is the largest asteroid in the asteroid belt between Mars and Jupiter.
• It is believed to have a buried ocean 30 miles deep.
• It is thought to have a thin ocean with high salt concentrations.
• Vesta's surface is icy and rocky, with many craters and canyons.

Explanation

• Apollo 11 was the mission that successfully landed astronauts.
• Neil Armstrong and Buzz Aldrin on the moon on July 20, 1969.

Explanation

The stratospheric ozone layer is Earth's “sunscreen”  protecting living things from too much ultraviolet radiation from the sun.

Oxygen layer in the atmosphere

Ozone protects us from the harmful ultraviolet radiation of the sun.

Ozone formula: O3

The ozone layer lies approximately 15-40 kilometers (10-25 miles) above the Earth's surface, in the stratosphere.

The ozone layer is depleting: Air pollution

ND17-7-2023

Explanation

The magnitude of an earthquake is a single value that describes the size of the earthquake at its source

Earthquake Magnitude Scale

5.5 to 6.0: Slight damage to buildings and other structures.

6.1 to 6.9: May cause a lot of damage in very populated areas.

7.0 to 7.9: Major earthquake. Serious damage.

8.0 or greater: Great earthquake. Can totally destroy communities near the epicenter.

ND-21-5-2023

Explanation

A satellite is an object that orbits a larger celestial body, such as a planet or star.

Examples:

• Moons (natural satellites) that orbit planets
• Artificial satellites (like the International Space Station) that orbit Earth

Explanation

“shooting stars” are called meteors

Most meteors burn up in the atmosphere before they reach the ground

Shooting stars are little rocks from space that catch fire as soon as they enter the Earth's atmosphere.

Explanation

• Uranus is an extremely cold planet and it's called Ice Giant.
• It's identical to the planet Neptune.
• It has 27 moons.
• It's largest moon; Titania.