MILKY WAY - GEO HELIO - BIG BANG

What the shape of the milky way? Choose the best shape

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What has to happen for a black hole to form?

• A planet must collapse inward on itself

• A large star or group of stars must collapse

• Two stars must collide with one another

What is a galactic year?

• The time it takes for the sun to orbit around the center of the galaxy

• The time it takes for one arm of the galaxy to move ninety degrees

• The time it takes the Earth to make one revolution around the sun

What kind of galaxy is this?

• Ring

• Spiral

• Irregular

Our "hometown" is a vast, flat, disk-shaped collection of gas, dust, and stars called ___

• the Andromeda Galaxy

• the Milky Way Galaxy

• the Large Magellanic Cloud

• the Triangulum Galaxy

How far is it across the Milky Way Galaxy?

• 100 light years across

• 1,000 light years across

• 10,000 light years across

• 100,000 light years across

Where are we, Earthlings, located in the Milky Way Galaxy?

• precisely at the center

• near the center

• halfway out from the center

• at the outer edge

How long does our Sun take to orbit the galaxy?

• about 25 million years

• about 250 million years

• about 2 billion years

• about 5 billion years

Our Sun is located just outside one of the smaller arms called ___

• the Perseus Arm

• the Orion Arm

• the Centaurus Arm

• the Sagittarius Arm

What object sits at the very center of our galaxy?

• a protostar

• a red hypergiant

• a massive black hole

• a neutron star