Grade 8 · Science · Building Confidence
Free Science Concepts and Evidence worksheet - version 8
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-MUQK3A-1751
What is a wave's frequency?A. Formation of a new substance B. Repel C. They rearrange into new substances D. The number of cycles per unit time
What do like electric charges do?A. They rearrange into new substances B. Repel C. Speed with direction D. Conduction
What is evidence of a chemical change?A. Force, mass, and acceleration B. Formation of a new substance C. The number of cycles per unit time D. Total mass is conserved
What transfers thermal energy by direct contact?A. Speed with direction B. Total mass is conserved C. They rearrange into new substances D. Conduction
What does Newton's second law relate?A. Force, mass, and acceleration B. Total mass is conserved C. Repel D. Formation of a new substance
How is mass affected in a closed-system reaction?A. Total mass is conserved B. They rearrange into new substances C. The number of cycles per unit time D. Conduction
What happens to atoms during a chemical reaction?A. They rearrange into new substances B. Force, mass, and acceleration C. The number of cycles per unit time D. Speed with direction
What is velocity?A. Repel B. Total mass is conserved C. Formation of a new substance 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 8
- What is a wave's frequency?The number of cycles per unit time
- What do like electric charges do?Repel
- What is evidence of a chemical change?Formation of a new substance
- What transfers thermal energy by direct contact?Conduction
- 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 happens to atoms during a chemical reaction?They rearrange into new substances
- 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.