NumicornNumicornLearn, solve, progress

Arkansas ATLAS · Grade 7 · Science

Arkansas ATLAS Grade 7 Science Practice Test

Build Grade 7 Arkansas ATLAS Science readiness with five focused 10-question practice sets covering ecosystems, matter, forces, Earth systems, heredity, and scientific evidence.

Arkansas ATLAS Grade 7 Science practice sets

This Arkansas ATLAS Grade 7 Science Practice Test page provides five short practice sets with 10 original multiple-choice questions each. The sets support supplemental review of ecosystems, chemical reactions, forces, energy, Earth systems, heredity, adaptation, and scientific evidence.

Grade 7 Science skills covered

  • Food webs, trophic levels, population interactions, carrying capacity, biodiversity, and ecosystem resilience
  • Atoms, chemical reactions, conservation of mass, characteristic properties, phase changes, pH, reaction rates, and catalysts
  • Balanced forces, gravity, friction, kinetic and potential energy, acceleration, energy transfer, and energy transformations
  • Plate boundaries, earthquakes, rocks, fossils, the water cycle, watersheds, renewable resources, carbon dioxide, and climate evidence
  • DNA, genes, alleles, inherited traits, adaptation, natural selection, common ancestry, fossils, and variation

How to use this page

Complete one 10-question set at a time. Identify the evidence in each scenario, compare patterns in data, and review the explanation for every missed or guessed answer.

This is supplemental State Test Practice, State Assessment Practice, and Standardized Test Practice. It does not replace current Arkansas Department of Education ATLAS guidance, official blueprints, accommodations, or testing schedules.

For the broader Arkansas assessment hub, visit Arkansas State Assessments.

Select a test

5 Tests
1. Test2. Test3. Test4. Test5. Test

1. Test

Arkansas ATLAS Grade 7 Science Practice Questions

A 10-question Arkansas ATLAS Grade 7 science practice set on ecosystems and interactions, with answers and explanations.

Read each scenario carefully, choose one answer, and review the explanation after responding.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

Which relationship benefits both organisms?

Please select an answer first.

Correct answer: A

The correct answer is Mutualism.

  1. Identify the science idea: Decide whether the question is about ecosystems, matter, energy, Earth systems, forces, heredity, or scientific evidence.
  2. Use the evidence: In mutualism, both organisms receive a benefit from the interaction.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

In mutualism, both organisms receive a benefit from the interaction.

2. QuestionMultiple choice

What is the role of a decomposer in an ecosystem?

Please select an answer first.

Correct answer: B

The correct answer is Break down dead matter and return nutrients to the environment.

  1. Identify the science idea: Decide whether the question is about ecosystems, matter, energy, Earth systems, forces, heredity, or scientific evidence.
  2. Use the evidence: Decomposers break down dead organisms and waste, returning nutrients to soil or water.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

Decomposers break down dead organisms and waste, returning nutrients to soil or water.

3. QuestionMultiple choice

Why are there generally fewer organisms at the top of a food chain?

Please select an answer first.

Correct answer: C

The correct answer is Less usable energy is available at higher trophic levels.

  1. Identify the science idea: Decide whether the question is about ecosystems, matter, energy, Earth systems, forces, heredity, or scientific evidence.
  2. Use the evidence: Only a fraction of energy is transferred to the next trophic level, so less energy supports higher-level consumers.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

Only a fraction of energy is transferred to the next trophic level, so less energy supports higher-level consumers.

4. QuestionMultiple choice

A drought reduces the amount of grass in a prairie. Which population is most likely affected first by less grass?

Please select an answer first.

Correct answer: D

The correct answer is Grass-eating herbivores.

  1. Identify the science idea: Decide whether the question is about ecosystems, matter, energy, Earth systems, forces, heredity, or scientific evidence.
  2. Use the evidence: Herbivores depend directly on grass for food, so a reduction in grass can reduce their available energy and shelter.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

Herbivores depend directly on grass for food, so a reduction in grass can reduce their available energy and shelter.

5. QuestionMultiple choice

What is carrying capacity?

Please select an answer first.

Correct answer: A

The correct answer is The largest population an environment can support over time.

  1. Identify the science idea: Decide whether the question is about ecosystems, matter, energy, Earth systems, forces, heredity, or scientific evidence.
  2. Use the evidence: Carrying capacity depends on resources, space, competition, and other environmental conditions.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

Carrying capacity depends on resources, space, competition, and other environmental conditions.

6. QuestionMultiple choice

Which change would most likely increase competition between two deer populations?

Please select an answer first.

Correct answer: B

The correct answer is A decrease in the amount of available food.

  1. Identify the science idea: Decide whether the question is about ecosystems, matter, energy, Earth systems, forces, heredity, or scientific evidence.
  2. Use the evidence: When a needed resource becomes scarce, organisms are more likely to compete for it.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

When a needed resource becomes scarce, organisms are more likely to compete for it.

7. QuestionMultiple choice

How can a new predator change an established food web?

Please select an answer first.

Correct answer: C

The correct answer is It can reduce prey populations and affect organisms connected to those prey.

  1. Identify the science idea: Decide whether the question is about ecosystems, matter, energy, Earth systems, forces, heredity, or scientific evidence.
  2. Use the evidence: A predator changes feeding relationships and may cause effects that spread through the food web.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

A predator changes feeding relationships and may cause effects that spread through the food web.

8. QuestionMultiple choice

Which example shows a population rather than a community?

Please select an answer first.

Correct answer: D

The correct answer is All the gray squirrels living in one city park.

  1. Identify the science idea: Decide whether the question is about ecosystems, matter, energy, Earth systems, forces, heredity, or scientific evidence.
  2. Use the evidence: A population is made of one species living in the same area.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

A population is made of one species living in the same area.

9. QuestionMultiple choice

What is one likely effect of removing a keystone species?

Please select an answer first.

Correct answer: A

The correct answer is The structure and balance of the ecosystem may change greatly.

  1. Identify the science idea: Decide whether the question is about ecosystems, matter, energy, Earth systems, forces, heredity, or scientific evidence.
  2. Use the evidence: A keystone species has a large effect on its ecosystem relative to its abundance.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

A keystone species has a large effect on its ecosystem relative to its abundance.

10. QuestionMultiple choice

Why can biodiversity help an ecosystem recover from a disturbance?

Please select an answer first.

Correct answer: B

The correct answer is Different species may perform overlapping roles or respond differently.

  1. Identify the science idea: Decide whether the question is about ecosystems, matter, energy, Earth systems, forces, heredity, or scientific evidence.
  2. Use the evidence: A variety of species can provide resilience because some organisms may survive and continue important ecosystem roles.
  3. Check the claim: Make sure the answer matches the model, observation, data, or system described.

A variety of species can provide resilience because some organisms may survive and continue important ecosystem roles.

Previous testNext test

Choose your next study path

Elementary School Tests

Build foundational reading, math, science, and social studies skills for Grades 1–5.

Middle School Tests

Review grade-level ELA, math, science, and social studies skills for Grades 6–8.

High School Tests

Explore course and assessment preparation for Grades 9–12.

Pomodoro Timer

Use focused study intervals to work through your next practice set.

Frequently asked questions about Arkansas ATLAS Grade 7 Science Practice Test

Which science skills are covered?

The page covers ecosystems, matter, chemical reactions, forces, energy, Earth systems, heredity, adaptation, and scientific evidence.

How many questions are included?

There are five practice sets with 10 questions each, for 50 questions in total. Each set can be completed separately.

Are these official ATLAS questions?

No. These are original supplemental practice questions. Check the latest Arkansas Department of Education information for official materials, standards, accommodations, and policies.