8th Science STAAR Review

Front

What type of interaction exists between shrimp and blue crabs in a food web?

Back

Shrimp compete with blue crabs for food.

Front

What is a characteristic used to classify mushrooms and yeasts as fungi?

Back

They are heterotrophs.

Front

What keeps Earth in its orbit?

Back

The gravity of the sun.

Front

Which type of electromagnetic wave has a wavelength longer than that of yellow light?

Back

Infrared Radiation.

Front

What is the definition of a heterotroph?

Back

An organism that cannot produce its own food and must consume other organisms.

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic matter, recycling nutrients back into the soil.

Front

What is the difference between prokaryotes and eukaryotes?

Back

Prokaryotes are unicellular organisms without a nucleus, while eukaryotes have a nucleus and can be unicellular or multicellular.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is the significance of the sun's gravity in the solar system?

Back

The sun's gravity keeps the planets, including Earth, in their orbits.

Front

What is the definition of competition in ecology?

Back

Competition occurs when two or more organisms vie for the same resources in an ecosystem.