A stellar black hole is a type of black hole that is formed from the remnants of a massive star after it has exhausted its nuclear fuel and undergoes a supernova explosion. These black holes are relatively small in size compared to supermassive black holes, with masses ranging from about 3 to 20 times that of the Sun.

Formation of Stellar Black Holes

When a massive star reaches the end of its life cycle, it undergoes a supernova explosion, during which the outer layers of the star are ejected into space, while the core collapses under its own gravity. If the core's mass is above a certain threshold, known as the Chandrasekhar limit, it will continue collapsing into a black hole, forming a stellar black hole.

Characteristics of Stellar Black Holes

Stellar black holes are characterized by their immense gravitational pull, which is so strong that not even light can escape from them, giving them their name. This makes them invisible to traditional telescopes and can only be detected through their interaction with nearby matter or through the gravitational waves they emit.

Study Guide

Formation: Describe the process by which a stellar black hole is formed from the remnants of a massive star.
Characteristics: Explain the key characteristics of stellar black holes, including their gravitational pull and how they are detected.
Comparison: Compare and contrast stellar black holes with supermassive black holes in terms of their size, mass, and impact on the universe.
Observation: Discuss the methods used by astronomers to observe and study stellar black holes, including indirect detection through their gravitational effects.
Implications: Explore the implications of stellar black holes on our understanding of the universe and the role they play in the life cycle of stars.

By understanding the formation and characteristics of stellar black holes, as well as their implications for our understanding of the cosmos, we can gain valuable insights into the nature of these enigmatic objects and their role in shaping the universe.

◂Science Worksheets and Study Guides Seventh Grade. Ecosystems, food chains and food webs

Study Guide

Ecosystems, food chains and food webs

Activity Lesson

Ecosystems, Food Chains & Food Webs

Worksheet/Answer key

Ecosystems, food chains and food webs

Worksheet/Answer key

Ecosystems, food chains and food webs

Worksheet/Answer key

Ecosystems, food chains and food webs

Vocabulary/Answer key

Ecosystems, food chains and food webs

Vocabulary/Answer key

Ecosystems, food chains and food webs

Vocabulary/Answer key

Ecosystems, food chains and food webs

Vocabulary/Answer key

Ecosystems, food chains and food webs

Vocabulary/Answer key

Ecosystems, food chains and food webs

The resources above cover the following skills:

LIFE SCIENCE

Ecosystems: Interactions, Energy, and Dynamics

Examine the cycling of matter between abiotic and biotic parts of ecosystems to explain the flow of energy and the conservation of matter.

Analyze and interpret data to provide evidence regarding how resource availability impacts individual organisms as well as populations of organisms within an ecosystem.

Construct an explanation to predict patterns of interactions in different ecosystems in terms of the relationships between and among organisms (e.g., competition, predation, mutualism, commensalism, parasitism).

Engage in argument to defend the effectiveness of a design solution that maintains biodiversity and ecosystem services (e.g., using scientific, economic, and social considerations regarding purifying water, recycling nutrients, preventing soil erosion).