Grade 8 · Science · Challenge
Free Science Concepts and Evidence worksheet - version 6
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 · Stretch challenge · 8 questions · Version PG-15UDKDM-1QWR
What does Newton's second law relate?A. Speed with direction B. Formation of a new substance C. Force, mass, and acceleration D. They rearrange into new substances
What happens to atoms during a chemical reaction?A. Force, mass, and acceleration B. They rearrange into new substances C. Speed with direction D. Conduction
What transfers thermal energy by direct contact?A. Conduction B. Speed with direction C. Formation of a new substance D. They rearrange into new substances
How is mass affected in a closed-system reaction?A. Total mass is conserved B. The number of cycles per unit time C. Conduction D. Formation of a new substance
What is a wave's frequency?A. The number of cycles per unit time B. Speed with direction C. Repel D. Force, mass, and acceleration
What is evidence of a chemical change?A. Speed with direction B. They rearrange into new substances C. Conduction D. Formation of a new substance
What is velocity?A. Repel B. Formation of a new substance C. The number of cycles per unit time D. Speed with direction
What do like electric charges do?A. Total mass is conserved B. Repel C. They rearrange into new substances 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 6
- What does Newton's second law relate?Force, mass, and acceleration
- 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
- What is a wave's frequency?The number of cycles per unit time
- What is evidence of a chemical change?Formation of a new substance
- What is velocity?Speed with direction
- What do like electric charges do?Repel
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.