Multiple Choice
What is the distinguishing characteristic of what we call ordinary matter (such as the matter that makes up stars, planets, and people) ?
A) It emits a great deal of light.
B) It can attract other matter through the force of gravity.
C) It consists of atoms or ions with nuclei made from protons and neutrons.
D) It is made of subatomic particles that scientists call WIMPs.
Correct Answer:
Verified
Correct Answer:
Verified
Q78: What is a rotation curve?<br>A)a graph that
Q79: What is the best alternative explanation for
Q80: An Accelerating Universe? Current evidence that the
Q81: Refer to this scenario for the following
Q82: Based on current evidence, a supercluster is
Q84: Which of the following are candidates for
Q85: Measuring the amount of deuterium in the
Q86: The visible parts of galaxies contribute about
Q87: Based on observations of the cosmic microwave
Q88: Compared to the critical density of matter,