Grade 8 · Science · Building Confidence
Free Science Concepts and Evidence worksheet - version 14
Grade 8 science practice based on published U.S. learning expectations, with reproducible original variations. This printable version includes 8 grade-appropriate questions and a separate answer sheet.
Science Concepts and Evidence
Grade 8 · Building confidence · 8 questions · Version PG-BM30ZZ-1751
How is mass affected in a closed-system reaction?A. Speed with direction B. Force, mass, and acceleration C. Formation of a new substance D. Total mass is conserved
What does Newton's second law relate?A. Force, mass, and acceleration B. Formation of a new substance C. Repel D. They rearrange into new substances
What is velocity?A. Speed with direction B. They rearrange into new substances C. Force, mass, and acceleration D. Repel
What is evidence of a chemical change?A. Force, mass, and acceleration B. They rearrange into new substances C. Speed with direction D. Formation of a new substance
What is a wave's frequency?A. They rearrange into new substances B. Formation of a new substance C. Force, mass, and acceleration D. The number of cycles per unit time
What happens to atoms during a chemical reaction?A. They rearrange into new substances B. Conduction C. Speed with direction D. Force, mass, and acceleration
What do like electric charges do?A. Repel B. They rearrange into new substances C. Conduction D. Speed with direction
What transfers thermal energy by direct contact?A. Formation of a new substance B. They rearrange into new substances C. The number of cycles per unit time D. Conduction
Answers and teaching notes
Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.
Show answers for version 14
- How is mass affected in a closed-system reaction?Total mass is conserved
- What does Newton's second law relate?Force, mass, and acceleration
- What is velocity?Speed with direction
- What is evidence of a chemical change?Formation of a new substance
- What is a wave's frequency?The number of cycles per unit time
- What happens to atoms during a chemical reaction?They rearrange into new substances
- What do like electric charges do?Repel
- What transfers thermal energy by direct contact?Conduction
Worked example
Read the direction, identify the assessed skill, solve or cite evidence, and check the response.
Common mistake
Using a memorized procedure without checking what the question asks.
Helpful hint
Name the standard skill before answering.