8th grade Science STAAR Review

Front

What is a consumer in an ecosystem?

Back

A consumer is an organism that eats other organisms for energy. They are also known as heterotrophs.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Front

What are the groups in the periodic table?

Back

Elements in the same group share similar properties and have the same number of valence electrons.

Front

What element is represented by the atomic model with 5 protons?

Back

Boron (B) is represented by an atomic model with 5 protons.

Front

What is a Hertzsprung-Russell diagram used for?

Back

It is used to classify stars based on their luminosity and temperature.

Front

What type of stars are classified as supergiants?

Back

Supergiants are stars that have high luminosity and are found in the upper right of the Hertzsprung-Russell diagram.

Front

What position in Earth's orbit marks the beginning of spring in the Northern Hemisphere?

Back

Position 3 in Earth's orbit around the sun marks the beginning of spring.

Tags

NGSS.MS-ESS1-1

Front

What is the definition of a producer in an ecosystem?

Back

A producer is an organism that can make its own food, typically through photosynthesis.

Tags

NGSS.MS-LS1-6

Front

What is the difference between a scavenger and a predator?

Back

A scavenger feeds on dead organisms, while a predator hunts and kills other organisms for food.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons determine how an atom can bond with other atoms to form molecules.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Front

What is the role of decomposers in an ecosystem?

Back

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

Tags

NGSS.MS-LS2-3