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WorksheetsEvolution of Galaxies
Total questions: 10
Worksheet time: 5mins
How do spiral galaxies evolve into elliptical galaxies?
A star implodes, a black hole is formed, and gravity pulls the star inward. Afterwards, the arms of the galaxy begin to form, creating a spiral galaxy (Sc). Over time, gravity pulls the arms of the star tighter and tighter in (Sb--> Sa), eventually causing its arms to disappear completely and form an elliptical galaxy (E7)
Two galaxies combine to form a new galaxy with no definite shape.
A star self-implodes, creating a black hole that can eat up other stars as well. This is due to to the complete loss of nuclear fusion.
Irregular galaxies always stay irregular.
True
False
How do all galaxies form?
When a star self-implodes and forms a black hole. The black hole's gravity can take in stars, gas, dust, and planets, which begin forming. Over time, a galaxy begins to form.
The Big Bang formed all our galaxies as we know them today.
Galaxies were formed by planets colliding.
Galaxies were formed by neutron stars and Enrico Fermi.
Identify the galaxy. Spiral arms, flat-shaped, black hole in the middle (occasionally with a bar in the center), mainly a mix of differently-aged stars, rotates counter-clockwise.
Spiral, (Spiral-Barred)
Elliptical
Irregular
Milky Way
Identify the galaxy. Once a spiral galaxy, but soon lost its arms due to gravitational pull. It is round-shaped an spherical, has very little gas and dust, and is mainly made up of older stars. Can be populated with as many as trillions of stars, making them very large.
Spiral, (Spiral-Barred)
Elliptical
Irregular
Milky Way
Identify the galaxy. Formed by two different galaxies, colliding, this type of galaxy is mainly made up of young stars and is formed by the collision of two different galaxies. With no definite shape, it can eventually go back to being a spiral or elliptical galaxy.
Spiral (Spiral-Barred)
Elliptical
Irregular
Milky Way
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