Grade 8 · Science · Challenge
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 · Stretch challenge · 8 questions · Version PG-IG453I-1QWR
What does Newton's second law relate?A. Force, mass, and acceleration B. Total mass is conserved C. They rearrange into new substances D. Speed with direction
What is a wave's frequency?A. Total mass is conserved B. The number of cycles per unit time C. Force, mass, and acceleration D. They rearrange into new substances
What do like electric charges do?A. Speed with direction B. They rearrange into new substances C. Formation of a new substance D. Repel
What is velocity?A. Total mass is conserved B. Force, mass, and acceleration C. The number of cycles per unit time D. Speed with direction
What is evidence of a chemical change?A. Conduction B. They rearrange into new substances C. The number of cycles per unit time D. Formation of a new substance
How is mass affected in a closed-system reaction?A. Speed with direction B. The number of cycles per unit time C. Force, mass, and acceleration D. Total mass is conserved
What happens to atoms during a chemical reaction?A. Force, mass, and acceleration B. The number of cycles per unit time C. Formation of a new substance D. They rearrange into new substances
What transfers thermal energy by direct contact?A. Conduction B. Speed with direction C. They rearrange into new substances D. The number of cycles per unit time
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 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 is velocity?Speed with direction
- What is evidence of a chemical change?Formation of a new substance
- How is mass affected in a closed-system reaction?Total mass is conserved
- What happens to atoms during a chemical reaction?They rearrange into new substances
- What transfers thermal energy by direct contact?Conduction
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.