Science Review 5.8C

Front

What is the definition of a planet?

Back

A planet is a celestial body that orbits a star, is spherical in shape, and has cleared its orbit of other debris.

Front

What is the difference between a star and a planet?

Back

A star is a massive, luminous sphere of plasma that generates energy through nuclear fusion, while a planet is a smaller body that orbits a star and does not produce its own light.

Front

What is the role of the sun in our solar system?

Back

The sun is the central star of our solar system, providing light and heat that sustain life on Earth and influencing the orbits of planets.

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, depending on their masses and the distance between them.

Front

What is the moon's role in relation to Earth?

Back

The moon orbits Earth and affects its tides, stabilizes its axial tilt, and influences various natural phenomena.

Front

What is the definition of an orbit?

Back

An orbit is the curved path that an object takes around a star, planet, or moon due to gravitational forces.

Front

What is the difference between a solar eclipse and a lunar eclipse?

Back

A solar eclipse occurs when the moon passes between the Earth and the sun, blocking the sun's light. A lunar eclipse occurs when the Earth passes between the sun and the moon, casting a shadow on the moon.

Front

What is the importance of the Earth's atmosphere?

Back

The Earth's atmosphere protects life by filtering harmful solar radiation, regulating temperature, and providing essential gases like oxygen.

Front

What is a comet?

Back

A comet is a small celestial body made of ice, dust, and rocky material that, when close to the sun, develops a glowing coma and tail.

Front

What is the definition of a galaxy?

Back

A galaxy is a vast system of stars, star clusters, dust, gas, and dark matter bound together by gravity.