Earth, Sun & Moon System
What causes day and night on Earth?
The rotation of Earth on its axis.
What is the center of our solar system?
The Sun.
What is a galaxy?
A large system of stars, gas, dust, and dark matter held together by gravity.
What gas do plants produce that humans need to breathe?
Oxygen.
What does NASA stand for?
National Aeronautic and Space Administration
What phase is the moon when it is completely illuminated?
Full Moon.
Name the four inner planets.
Mercury, Venus, Earth, Mars.
What galaxy is Earth located in?
The Milky Way.
Name the layer of Earth’s atmosphere that protects us from harmful ultraviolet rays.
The ozone layer.
What instrument do scientists use to observe distant stars and galaxies?
Telescope
What causes eclipses?
The alignment of the Earth, Moon, and Sun blocking light.
This is an object in space that strikes the surface of a planet or other body
Meteorite
What is the name of the theory that explains the beginning of the universe?
The Big Bang Theory.
Why is liquid water important for life on Earth?
It is necessary for all known forms of life to survive.
Name one technology developed for space that is now used in everyday life.
Examples: Memory foam, scratch-resistant lenses, cordless tools.
How long does it take the Earth to orbit the Sun once?
About 365 days (1 year).
The names of the outer planets
Jupiter, Saturn, Uranus, Neptune
What do we call a star that has exploded at the end of its life cycle?
A supernova.
How does Earth's magnetic field help protect life?
It shields Earth from harmful solar wind and cosmic radiation.
What is the International Space Station (ISS)?
A space laboratory orbiting Earth where astronauts live and conduct experiments.
What causes the seasons on Earth?
The tilt of Earth's axis as it orbits the Sun.
The region around a star where conditions are right for life
Habitable zone( goldilocks zone)
Irregular, Spiral , Elliptical
What causes the greenhouse effect that helps keep Earth warm?
Gases like carbon dioxide trap heat in the atmosphere.
How has space exploration helped improve weather forecasting on Earth?
Satellites monitor Earth's weather and provide data for forecasts and climate studies.