Grade 8 · Science · Challenge
Free Science Concepts and Evidence worksheet - version 8
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-11YJ4O0-1QWR
What is a wave's frequency?A. Formation of a new substance B. The number of cycles per unit time C. Conduction 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. Total mass is conserved D. Force, mass, and acceleration
What does Newton's second law relate?A. Speed with direction B. Repel C. They rearrange into new substances D. Force, mass, and acceleration
What happens to atoms during a chemical reaction?A. They rearrange into new substances B. Formation of a new substance C. Repel D. The number of cycles per unit time
What is evidence of a chemical change?A. They rearrange into new substances B. Force, mass, and acceleration C. Formation of a new substance D. Speed with direction
What transfers thermal energy by direct contact?A. Formation of a new substance B. Force, mass, and acceleration C. The number of cycles per unit time D. Conduction
What is velocity?A. Conduction B. They rearrange into new substances C. Force, mass, and acceleration D. Speed with direction
What do like electric charges do?A. Total mass is conserved B. Speed with direction C. Repel D. Conduction
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 8
- What is a wave's frequency?The number of cycles per unit time
- How is mass affected in a closed-system reaction?Total mass is conserved
- 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 is evidence of a chemical change?Formation of a new substance
- What transfers thermal energy by direct contact?Conduction
- 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.