The Universe - 8th Grade

Front

What holds the galaxy together?

Back

Gravity is the force that holds galaxies together, keeping stars and other celestial bodies in orbit.

Front

According to the HR Diagram, what color are the hottest stars?

Back

The hottest stars are associated with the color blue.

Front

Where are stars formed?

Back

Stars are formed in a nebula, which is a large cloud of gas and dust in space.

Front

In which section of the HR Diagram would you find bright but cooler stars?

Back

Bright but cooler stars are found in section Q2 of the HR Diagram.

Front

What is a meteor?

Back

A meteor is a streak of light in the sky that occurs when space debris enters Earth's atmosphere.

Front

What is a nebula?

Back

A nebula is a giant cloud of gas and dust in space, where new stars are born.

Front

What is the HR Diagram?

Back

The HR Diagram (Hertzsprung-Russell Diagram) is a scatter plot of stars showing the relationship between their brightness and temperature.

Front

What is a black hole?

Back

A black hole is a region in space where the gravitational pull is so strong that nothing, not even light, can escape from it.

Front

What is a comet?

Back

A comet is a small celestial body made of ice, dust, and rocky material that, when passing close to the sun, displays a visible atmosphere or tail.

Front

What is the difference between a planet and a star?

Back

A planet is a celestial body that orbits a star, while a star is a massive, luminous sphere of plasma held together by gravity.