Grade 8 · Science · Building Confidence
Free Science Concepts and Evidence worksheet - version 13
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-AS47X2-1751
What do like electric charges do?A. Repel B. Formation of a new substance C. Total mass is conserved D. Conduction
What happens to atoms during a chemical reaction?A. Force, mass, and acceleration B. Speed with direction C. They rearrange into new substances D. The number of cycles per unit time
What is evidence of a chemical change?A. Total mass is conserved B. Repel C. Force, mass, and acceleration D. Formation of a new substance
What does Newton's second law relate?A. Conduction B. They rearrange into new substances C. Speed with direction D. Force, mass, and acceleration
How is mass affected in a closed-system reaction?A. Total mass is conserved B. Repel C. The number of cycles per unit time D. Conduction
What is a wave's frequency?A. The number of cycles per unit time B. Repel C. Total mass is conserved D. Conduction
What transfers thermal energy by direct contact?A. Formation of a new substance B. Force, mass, and acceleration C. They rearrange into new substances D. Conduction
What is velocity?A. Total mass is conserved B. They rearrange into new substances C. Force, mass, and acceleration D. Speed with direction
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 13
- What do like electric charges do?Repel
- What happens to atoms during a chemical reaction?They rearrange into new substances
- What is evidence of a chemical change?Formation of a new substance
- What does Newton's second law relate?Force, mass, and acceleration
- How is mass affected in a closed-system reaction?Total mass is conserved
- What is a wave's frequency?The number of cycles per unit time
- What transfers thermal energy by direct contact?Conduction
- What is velocity?Speed with direction
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.