🌌 THE UNIVERSE
What is the Milky Way? (A) star (B) galaxy (C) planet
A galaxy
How many planets are there in the Solar System?
Eight
Which movement of the Earth causes day and night?
Rotation
What are the two main elements of climate?
Temperature and precipitation
What do we call a landscape with very few human-made features?
A natural landscape.
What theory explains the origin of the Universe?
The Big Bang theory
What type of celestial object is the Sun?
A star
How long does the Earth take to orbit the Sun?
One year / 365 days
How does altitude affect temperature?
The higher the altitude, the lower the temperature
What landscape near the Equator has a lot of rain and tall trees?
Rainforest
In which part of our galaxy is the Solar System located?
In the Orion Arm
What is a natural satellite? Give an example
A huge object that orbits a planet. Example: The Moon
Why do we always see the same side of the Moon?
Its rotation takes the same time as its revolution around Earth.
Name one climate in the hot zone.
Equatorial / Tropical / Desert (any valid)
Why is it difficult to live in deserts? Say two reasons.
Extreme temperatures and lack of water.
What is the difference between a star and a planet?
A star produces light and heat; a planet does not.
What is the difference between asteroids and comets?
Asteroids are rocks; comets are dust and ice with a tail.
What causes the seasons?
The tilt of Earth’s axis during its revolution and the distance of the Earth from the sun.
Difference between Mediterranean and continental climates.
Mediterranean: dry summers; Continental: very cold winters and hot summers
Name two temperate landscapes.
Mediterranean and oceanic.
Why do some stars look brighter than others from Earth?
Their brightness depends on their luminosity and distance from Earth.
Why is Earth’s distance from the Sun important for life?
It allows liquid water and suitable temperatures for life.
Explain the difference between a solar eclipse and a lunar eclipse.
Solar: the Moon blocks the Sun’s light; Lunar: Earth blocks sunlight to the Moon.
Why are polar regions very cold all year round?
They receive little direct sunlight.
How does vegetation change when altitude increases in mountains?
Forests below → shrubs/meadows → little or no vegetation at the top