Scientists are studying the effects of climate change on the Baltic Sea. Which statement best explains why biodiversity in the Baltic Sea could decrease if these changes occur?

Plants and animals adapted for living in saltier conditions will not be able to survive and reproduce.

Fewer types of plants and animals are found in warm water than in cool water

Plants and animals adapted for living in saltwater will grow more slowly in water that has less salt.

Animals adapted for living in warm water will eat all the plants and animals adapted for living in cool water.

Aluminum, sulfur, and chlorine are elements found on the periodic table. Tests involving these three elements would show that at normal room temperature —

aluminum is malleable and conducts electricity

sulfur is malleable and aluminum conducts electricity

chlorine is malleable and conducts electricity

all three elements are malleable and conduct electricity

What do these volcanoes indicate about plate tectonics in the region?

The volcanoes form an island arc, indicating a converging plate boundary.

The volcanoes form a line, indicating a diverging plate boundary

Two plates are moving past each other, causing faulting and magma formation.

Two plates are moving apart, creating new seafloor.

The total mass of the cyclist and the bicycle is 100.0 kg. Based on this information, what is the acceleration of the cyclist?

0 6. m6 /s2 forward, because the applied force is greater than the force of the air

0 6. m6 /s2 backward, because the force of the air slows the cyclist down

2 3. m/s2 backward, because the forces are opposite and not equal

2 3. m/s2 forward, because the cyclist’s inertia is greater than the force of the air

A chemist is identifying the elements present in a sample of seawater. What characteristic of an element’s atoms always determines the element’s identity?

The location of valence electrons

The number of valence electrons

Copper interferes with photosynthesis algae and other aquatic plants. What would be the most likely result of an accidental spill of these compounds in an aquatic environment?

The plant populations would be reduced.

The fish would grow larger than usual.

The zooplankton population would increase

The plants would increase in size but decrease in number

Tropical rain forests have the greatest biodiversity of any type of land ecosystem. How does biodiversity contribute to the sustainability of an ecosystem?

The presence of more species with different adaptations makes it more likely that some organisms will survive an ecological disaster

Greater genetic variation within species makes it more likely that some individuals will survive a disease outbreak.

The presence of a variety of herbivore species that can feed on a large number of different producer species helps ensure abundant prey for predators in the ecosystem.

Science STAAR pt. 2

Authored by Joye Smittick

Chemistry, Biology, Other Sciences

8th Grade - University

NGSS covered

Used 295+ times

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25 questions

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

An atom of a certain element has 36 protons, 36 electrons, and a mass number of 84. At room temperature this element is a very stable gas. How many neutrons are in this atom?

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What plate boundary feature is also shown?

A ridge formed by an inactive convergent boundary

A valley forming at an active divergent boundary

A fault forming at an active transform boundary

A volcano formed by an active transform boundary

Tags

NGSS.MS-ESS2-3

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Based on this diagram, how do the characteristics of Star 1 and Star 2 compare?

Star 1 is cooler and less bright than Star 2.

Star 1 is hotter and brighter than Star 2.

Star 1 is cooler and brighter than Star 2.

Star 1 is hotter and less bright than Star 2.

Tags

NGSS.HS-ESS1-3

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which two types of organisms in this aquatic food web have a producer–consumer relationship?

Microscopic algae and white suckers

Small invertebrates and amphipods

Phytoplankton and mummichogs

Amphipods and channel catfish

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-2

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Water with which of these conditions would cause the most competition for resources among all three species of fish?

Very cold, very clear, and very fast

Very warm, very clear, and very slow

Mild temperatures, some suspended particles, flows very fast

Mild temperatures, suspended particles, flows at a medium speed

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-2

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of these elements is in this group?

Lithium

Strontium

Aluminum

Silicon

MULTIPLE CHOICE QUESTION

1 min • 1 pt

At which location is the gravitational potential energy of the water the greatest?

Location W

Location X

Location Y

Location Z

Tags

NGSS.MS-PS3-2

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Science STAAR pt. 2

An atom of a certain element has 36 protons, 36 electrons, and a mass number of 84. At room temperature this element is a very stable gas. How many neutrons are in this atom?

What plate boundary feature is also shown?

Based on this diagram, how do the characteristics of Star 1 and Star 2 compare?

Which two types of organisms in this aquatic food web have a producer–consumer relationship?

Water with which of these conditions would cause the most competition for resources among all three species of fish?

Which of these elements is in this group?

At which location is the gravitational potential energy of the water the greatest?

Which area of the coastline has most likely experienced the greatest effect of erosion from waves over hundreds of years?

Which of these formulas contain equal numbers of nitrogen atoms?

Based on the dichotomous key, in what order should this insect be classified?

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