Grade 8 · Science · On Level
Free Science Concepts and Evidence worksheet - version 10
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-K4E40J-N8EZ
What transfers thermal energy by direct contact?A. Conduction B. Repel C. Formation of a new substance D. Total mass is conserved
What happens to atoms during a chemical reaction?A. The number of cycles per unit time B. They rearrange into new substances C. Force, mass, and acceleration D. Repel
How is mass affected in a closed-system reaction?A. Speed with direction B. Force, mass, and acceleration C. Total mass is conserved D. They rearrange into new substances
What is a wave's frequency?A. They rearrange into new substances B. Formation of a new substance C. The number of cycles per unit time D. Speed with direction
What does Newton's second law relate?A. Speed with direction B. The number of cycles per unit time C. Repel D. Force, mass, and acceleration
What do like electric charges do?A. Conduction B. Total mass is conserved C. Repel D. Formation of a new substance
What is evidence of a chemical change?A. Formation of a new substance B. Repel C. Total mass is conserved D. The number of cycles per unit time
What is velocity?A. Speed with direction B. Force, mass, and acceleration C. They rearrange into new substances 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 10
- What transfers thermal energy by direct contact?Conduction
- What happens to atoms during a chemical reaction?They rearrange into new substances
- 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 does Newton's second law relate?Force, mass, and acceleration
- What do like electric charges do?Repel
- What is evidence of a chemical change?Formation of a new substance
- 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.