Grade 8 · Science · On Level
Free Science Concepts and Evidence worksheet - version 7
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-TWN02F-N8EZ
What does Newton's second law relate?A. Repel B. They rearrange into new substances C. Total mass is conserved D. Force, mass, and acceleration
What transfers thermal energy by direct contact?A. Conduction B. The number of cycles per unit time C. Formation of a new substance D. Force, mass, and acceleration
What do like electric charges do?A. The number of cycles per unit time B. Formation of a new substance C. They rearrange into new substances D. Repel
What is evidence of a chemical change?A. Conduction B. The number of cycles per unit time C. Force, mass, and acceleration D. Formation of a new substance
What is a wave's frequency?A. Force, mass, and acceleration B. Repel C. The number of cycles per unit time D. Formation of a new substance
What happens to atoms during a chemical reaction?A. They rearrange into new substances B. Repel C. Force, mass, and acceleration D. Formation of a new substance
What is velocity?A. Force, mass, and acceleration B. The number of cycles per unit time C. Conduction D. Speed with direction
How is mass affected in a closed-system reaction?A. Total mass is conserved B. The number of cycles per unit time C. Repel D. Force, mass, and acceleration
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 7
- 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
- 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 happens to atoms during a chemical reaction?They rearrange into new substances
- What is velocity?Speed with direction
- 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.