Ohio 8th Grade Science Review

Front

What is a canyon?

Back

A canyon is a deep, narrow valley with steep sides, often carved by the erosion of a river over time.

Front

What is asexual reproduction?

Back

Asexual reproduction is a mode of reproduction where offspring are produced from a single parent without the involvement of gametes, resulting in genetically identical offspring.

Front

Why is genetic diversity important for species survival?

Back

Genetic diversity increases the chances of survival for a species during environmental changes, as it allows for a wider range of traits that may be beneficial.

Front

What is a mountain?

Back

A mountain is a large landform that rises prominently above its surroundings, typically characterized by steep slopes and significant elevation.

Front

What is an index fossil?

Back

An index fossil is a fossil that is used to define and identify a particular time period in the geological time scale, often being widespread but limited to a short time span.

Front

What is the role of fossils in geology?

Back

Fossils provide evidence of past life and can help scientists understand the history of the Earth, including changes in climate and environments.

Front

What is the difference between sexual and asexual reproduction?

Back

Sexual reproduction involves the combination of genetic material from two parents, while asexual reproduction involves a single parent producing genetically identical offspring.

Front

What factors contribute to the formation of canyons?

Back

Canyons are primarily formed by the erosion caused by flowing water, but can also be influenced by geological activity and weathering.

Front

What is genetic diversity?

Back

Genetic diversity refers to the total number of genetic characteristics in the genetic makeup of a species, which is crucial for adaptability and survival.

Front

How do mountains affect climate?

Back

Mountains can influence climate by blocking winds and creating rain shadows, leading to different weather patterns on either side.