Grade 8 · Science · On Level
Free Science Concepts and Evidence worksheet - version 11
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-JUEIBK-N8EZ
What is velocity?A. Speed with direction B. The number of cycles per unit time C. Total mass is conserved D. They rearrange into new substances
What is evidence of a chemical change?A. They rearrange into new substances B. Speed with direction C. Formation of a new substance D. Repel
What does Newton's second law relate?A. Conduction B. The number of cycles per unit time C. Force, mass, and acceleration D. Speed with direction
What is a wave's frequency?A. The number of cycles per unit time B. Speed with direction C. Total mass is conserved D. They rearrange into new substances
What do like electric charges do?A. They rearrange into new substances B. Total mass is conserved C. Repel D. Conduction
What happens to atoms during a chemical reaction?A. Force, mass, and acceleration B. Speed with direction C. The number of cycles per unit time D. They rearrange into new substances
What transfers thermal energy by direct contact?A. Total mass is conserved B. They rearrange into new substances C. Repel D. Conduction
How is mass affected in a closed-system reaction?A. They rearrange into new substances B. The number of cycles per unit time C. Total mass is conserved D. Formation of a new substance
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 11
- What is velocity?Speed with direction
- What is evidence of a chemical change?Formation of a new substance
- What does Newton's second law relate?Force, mass, and acceleration
- What is a wave's frequency?The number of cycles per unit time
- What do like electric charges do?Repel
- What happens to atoms during a chemical reaction?They rearrange into new substances
- What transfers thermal energy by direct contact?Conduction
- How is mass affected in a closed-system reaction?Total mass is conserved
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.