UNIT: EARTH AND SPACE SCIENCE

Front

What is apparent magnitude in astronomy?

Back

Apparent magnitude is a measure of the brightness of a star as seen from Earth, which depends on both the star's intrinsic brightness and its distance from Earth.

Front

How does the distance of a star from Earth affect its apparent magnitude?

Back

The greater the distance of a star from Earth, the dimmer it appears, affecting its apparent magnitude.

Front

What causes the seasons in the Northern and Southern Hemispheres?

Back

Seasons are caused by the tilt of the Earth's axis and its orbit around the Sun, leading to varying sunlight exposure in each hemisphere.

Front

What happens during the equinox?

Back

During the equinox, both hemispheres receive equal amounts of sunlight, resulting in nearly equal day and night lengths.

Front

What are fold mountains?

Back

Fold mountains are formed at continental convergent plate boundaries where tectonic forces push continental plates together, causing the Earth's crust to fold.

Front

What is the relationship between rock formation and folding?

Back

Folding and formation of rock layers can occur simultaneously during geological processes at plate boundaries.

Front

Why does Venus have a higher average temperature than Mercury?

Back

Venus has a thicker atmosphere than Mercury, which traps heat and leads to a higher average temperature despite being further from the Sun.

Front

What is the significance of a planet's atmosphere?

Back

A planet's atmosphere can influence its temperature, weather patterns, and ability to support life.

Front

What is the approximate size of the Sun compared to other celestial bodies?

Back

The Sun is significantly larger than Earth and the Moon, and its size can be represented on charts comparing celestial diameters.

Front

What is the Milky Way?

Back

The Milky Way is the galaxy that contains our Solar System, composed of billions of stars, planets, and other celestial objects.