NC 8th Grade Science EOG Review (2019)

Front

What describes the sequence of elements in Period 5 of the periodic table?

Back

The sequence includes highly reactive metals, relatively nonreactive metals, metalloids, reactive nonmetals, and reactive gases.

Front

What happens to most of the energy as it moves throughout a food web?

Back

Most of the energy is changed into heat energy.

Front

What conclusion is supported by the data on energy production from fossil fuels?

Back

Dependency on oil has increased, therefore energy production from oil is increasing.

Front

What happens to the deer population if all wolves are removed from the environment?

Back

The deer population would increase and begin to compete for food.

Front

What is the result of excess phosphates and nitrates in a lake?

Back

The growth of algae in the lake will increase.

Front

Define 'food web'.

Back

A food web is a system of interrelated food chains in an ecosystem.

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic material, recycling nutrients back into the ecosystem.

Front

What is the significance of the periodic table in science?

Back

The periodic table organizes elements based on their atomic number and properties, helping to predict chemical behavior.

Front

Explain the concept of energy transfer in an ecosystem.

Back

Energy transfer in an ecosystem occurs through food chains and webs, where energy is passed from producers to consumers and eventually to decomposers.

Front

What is the impact of invasive species on local ecosystems?

Back

Invasive species can disrupt local ecosystems by outcompeting native species for resources.