Which are accurate statements about dark matter? Select the two correct answers
1. Dark matter makes up the majority of the matter in the universe.
2. Dark matter is composed of ordinary matter that cannot be detected.
3. Dark matter interacts with light and other electromagnetic radiation.
4. Dark matter has been directly observed by scientists.
5. The existence of dark matter is still a theoretical concept.
The accurate statements about dark matter are:
1. Dark matter is a hypothetical form of matter that does not emit, absorb, or reflect light, hence making it invisible and difficult to detect.
2. Dark matter is believed to make up about 27% of the total mass-energy content of the universe.
These statements reflect our current understanding of dark matter based on scientific observations and theories.
To determine which statements about dark matter are accurate, we can rely on scientific evidence and research. Here are two accurate statements about dark matter:
1. Dark matter is an invisible and mysterious form of matter that does not interact with light or other electromagnetic radiation. This characteristic is derived from the observation that dark matter does not directly emit, absorb, or reflect light, making its detection challenging.
2. Dark matter's presence can be inferred through its gravitational effects on visible matter and its influence on the large-scale structure of the universe. Scientists study the motion of stars and galaxies, gravitational lensing, and the cosmic microwave background radiation to understand the distribution of dark matter.
These statements are based on observations and current scientific understanding of dark matter. It's important to note that dark matter is still an active area of research, and further discoveries or refinements to our understanding may occur in the future.