North Dakota A+ Science Grade 8 Practice Questions - North Dakota A+ Summative Science - Grade 8 Exam - North Dakota A+ Science Grade 8 Practice Questions - North Dakota A+ Summative Science

Question 1

The particles in a solid are packed closely together and vibrate in fixed positions. Which statement best explains why a solid keeps its own shape rather than flowing like a liquid?

The particles are held in place by strong attractive forces that keep them in fixed positions The particles move so slowly that gravity holds each one to the ground The particles are locked together by magnetic fields from Earth's core The particles have no energy of motion at all, so they cannot move past one another

Correct Answer:

The particles are held in place by strong attractive forces that keep them in fixed positions

Question 2

A student measures 25 g of baking soda and adds it to 100 g of vinegar in a sealed bag on a balance. After the reaction stops, the bag and everything in it still mass 125 g. Which principle does this best demonstrate?

Conservation of mass in a closed system Conservation of energy in an open system The law of definite proportions The law of multiple proportions

Correct Answer:

Conservation of mass in a closed system

Question 3

Which statement correctly describes the relationship between atoms and molecules?

Molecules are groups of two or more atoms joined by chemical bonds Atoms are made of molecules that are joined together by physical bonds Molecules are tiny pieces of an atom that have broken off Atoms and molecules are different names for the same particle

Correct Answer:

Molecules are groups of two or more atoms joined by chemical bonds

Question 4

When a swimmer pushes water backward with their hands, the water pushes the swimmer forward. Which law of motion does this illustrate?

Newton's third law of motion Newton's first law of motion Newton's second law of motion The law of universal gravitation

Correct Answer:

Newton's third law of motion

Question 5

Two waves travel through the same medium. Wave X has a shorter wavelength than wave Y. How do their frequencies compare, assuming they travel at the same speed?

Wave X has a higher frequency than wave Y Wave X has a lower frequency than wave Y Both waves have the same frequency Frequency cannot be compared without knowing the amplitude

Correct Answer:

Wave X has a higher frequency than wave Y

Exam overview

About this Exam

Prepare with the North Dakota A+ Science Grade 8 Practice Questions - North Dakota A+ Summative Science - Grade 8 Exam practice quiz. This question bank includes 100 questions covering earth, energy, water, front, and describes. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

More details

Additional Information

North Dakota A+ Science Grade 8 Practice Questions - North Dakota A+ Summative Science - Grade 8 Exam

This practice set contains 100 questions from the matching question bank and focuses on earth, energy, water, front, and describes. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

Quiz information

Frequently Asked Questions

The complete question count is available after full access is unlocked.

No fixed duration is currently configured for this quiz.

Question explanations are included where they are available in the quiz content, helping you review the reasoning after answering.

Yes. You can retake the practice test again as you continue studying during your available access period.

After your access is confirmed, you can continue into the complete practice exam from this quiz flow.

Unless explicitly stated otherwise, this page provides independent practice material for study and exam preparation and is not the official examination itself.

Correct Answer:

Correct Answer:

Correct Answer:

Correct Answer:

Correct Answer:

About this Exam

Additional Information

North Dakota A+ Science Grade 8 Practice Questions - North Dakota A+ Summative Science - Grade 8 Exam

Frequently Asked Questions

Related Questions

Aquatic Pest Management & Aquatic Science Practice Exam

4th Grade Terranova Practice Test

A Level Computer Science OCR Practice Exam

AAMI Science Practice Exam

ABCTE Science Practice Exam Study Guide

Certify Teacher Science Practice Exam