Which statements describe the principles of the big bang theory? Select two options.The universe is continuing to expand.The universe stretched from a single point.The universe resulted from the collision of light and dark energy.The universe expanded, but its size is now remaining constant.The universe is slowly collapsing and getting smaller.
✔ the Doppler effectthe Hubble telescope dark matter dark energy
are moving more slowly ✔ are moving fasterX contain more dark matter contain less dark matter
Use the drop-down menus to identify the order of these images for the formation of our solar system.
✔ 1X 2 3
1 2 ✔ 3
After our solar system began to form, dust and gas combined into small bodies that formed the planets. What are these small bodies called?
Imagine you are an astronomer who recently discovered a new planet orbiting a distant star.Which set of characteristics would you use to classify this planet as an inner or terrestrial planet? Check all that apply.dense and solidvery largethick atmosphere containing hydrogen and heliumlacking a solid surfacelocated near a star
Why is Jupiter so much larger than Earth? Check all that apply.
Which statements explain current theories about dark energy and dark matter? Check all that apply.Space that appears empty actually contains dark energy and dark matter.Dark matter does not emit electromagnetic radiation.Scientists believe dark energy will cause the universe to collapse inward to a single point.Scientists theorize that dark energy is causing the expansion of the universe to accelerate.Dark matter includes all of the dust, ice, and debris that scientists observe in black holes.
Which hypothesis is most supported by astronomers?
Which statements describe processes involved in the accretion of planetesimals and protoplanets? Check all that apply.Both involve the melting of solid materials in the nebula.Both involve the formation of solid particles from nebular materials.Both involve the work of the gravitational push on nebular materials.Both involve the trapping of gases and the clumping of masses of matter.Both involve the growing of gas grains with the addition of atoms and molecules.
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