The Universe
Name the theory: after the Big Bang, the Universe expanded rapidly.
Expansion theory.
What is found between the inner planets and the outer planets?
Asteroid belt.
What planet is more similar to the Earth?
Venus.
Definition of rotation.
Movement of the Earth around its axis.
Definition of Astrobiology.
Study of life in the universe.
What is a large system of stars, gas, and dust held together by gravity?
Galaxy.
Which panet has more moons?
Jupiter.
Which Planet is the smallest?
Mercury.
When the Earth comes between the Moon and the Sun.
Lunar eclipse.
Main function of the magnetic field.
To protect the surface from harmful solar radiation.
Name three assertions of the heliocentric model.
The Sun doesn’t move and is the centre of the Universe. All the planets revolve in concentric circles around the Sun. The Earth rotates on its axis and the Moon revolves around the Earth. The stars are fixed in a dome that doesn’t move.
Name the inner planets.
Mercury, Venus, Earth, and Mars.
Which planet is the farthest from the Sun?
Neptune.
Adaptation of plants to the environment during the autumn.
Many trees lose their leaves.
One advantage in the protection of the Earth.
Nature gives us clean air, water, food, materials and space for recreation. Spending time in nature is good for mental health. If we do not take care of the planet, its climate and ecosystems, we risk our survival.
Who suggested the modern model?
Johannes Kepler.
Name three Characteristics of outer planets.
Very cold, Gaseous, Ring systems, and multiple moons.
Which planet is the second biggest in the Solar System?
Saturn.
Definition of tides.
Periodic rising and falling of sea levels due to the gravitational pull of the Moon.
Two main topics of research of Astrobiology.
Identification of abiotic sources of organic compounds. Synthesis and function of macromolecules in the origin of life, early life and the development of increasing complexity. Co-evolution of life and environment. Identification and exploration of environments for habitability.
Number of kilometers in an astronomical unit.
1au = 150000000 km.
Name three Characteristics of Inner Planets.
Small rocky globes with dense atmospheres. Iron cores. Few moons. No rings. Multiple visits from space crafts.
Which one is the most famous dwarf planet?
Pluto.
Differences in the hemispheres during summer in Spain.
Sun’s rays hit directly the Northern hemisphere. Sun’s rays hit obliquely the Southern Hemisphere.
Chemicals ideal for life.
Carbon, hydrogen, oxygen, nitrogen, phosphorous and sulphur.