Which is a characteristic of dark matter? *
1 point
a. it does not interact with baryonic matter
b. it has not been observed directly.
c. it interacts with electromagnetic radiation.
e humans can see it
a. it does not interact with baryonic matter
To determine the characteristic of dark matter, let's go through each option:
a. It does not interact with baryonic matter.
Dark matter is believed to have little to no interaction with baryonic matter, which refers to the ordinary matter that makes up stars, planets, and living organisms. This is one of the main reasons dark matter remains difficult to detect directly.
b. It has not been observed directly.
Dark matter has not yet been observed directly through any known experimental observation. Its existence is inferred through its gravitational effects on visible matter in the Universe, such as galaxies and galaxy clusters.
c. It interacts with electromagnetic radiation.
Dark matter does not interact with electromagnetic radiation, such as light or radio waves. This lack of interaction with light is the reason why it is referred to as "dark."
Therefore, the correct characteristic of dark matter is:
Option b. It has not been observed directly.
It is important to note that although dark matter has not been directly observed, its presence can be inferred through its gravitational effects on visible matter in the Universe. Scientists are actively researching and studying dark matter to gain more understanding about its properties and nature.
The correct answer is:
a. it does not interact with baryonic matter