Grade 8 · Science · On Level
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 · On-level practice · 8 questions · Version PG-KEDPPI-N8EZ
What is evidence of a chemical change?A. Formation of a new substance B. Speed with direction C. They rearrange into new substances D. Conduction
What is a wave's frequency?A. The number of cycles per unit time B. Formation of a new substance C. Force, mass, and acceleration D. Repel
What does Newton's second law relate?A. The number of cycles per unit time B. Speed with direction C. Conduction D. Force, mass, and acceleration
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 do like electric charges do?A. Repel B. They rearrange into new substances C. The number of cycles per unit time D. Total mass is conserved
How is mass affected in a closed-system reaction?A. Conduction B. The number of cycles per unit time C. They rearrange into new substances D. Total mass is conserved
What happens to atoms during a chemical reaction?A. The number of cycles per unit time B. Force, mass, and acceleration C. They rearrange into new substances D. Speed with direction
What is velocity?A. Speed with direction B. They rearrange into new substances C. Force, mass, and acceleration D. Total mass is conserved
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 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 does Newton's second law relate?Force, mass, and acceleration
- What transfers thermal energy by direct contact?Conduction
- What do like electric charges do?Repel
- 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.