Grade 8 · Science · Challenge
Free Science Concepts and Evidence worksheet - version 4
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-15AECZO-1QWR
What does Newton's second law relate?A. Force, mass, and acceleration B. Total mass is conserved C. Formation of a new substance D. Conduction
What do like electric charges do?A. Repel B. Formation of a new substance C. Force, mass, and acceleration D. Conduction
What happens to atoms during a chemical reaction?A. The number of cycles per unit time B. Conduction C. Repel D. They rearrange into new substances
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 transfers thermal energy by direct contact?A. Force, mass, and acceleration B. Conduction C. They rearrange into new substances D. Speed with direction
How is mass affected in a closed-system reaction?A. Repel B. The number of cycles per unit time C. Force, mass, and acceleration D. Total mass is conserved
What is velocity?A. Total mass is conserved B. Speed with direction C. Repel D. The number of cycles per unit time
What is a wave's frequency?A. Force, mass, and acceleration B. The number of cycles per unit time C. Conduction D. Repel
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 4
- What does Newton's second law relate?Force, mass, and acceleration
- What do like electric charges do?Repel
- 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
- How is mass affected in a closed-system reaction?Total mass is conserved
- What is velocity?Speed with direction
- What is a wave's frequency?The number of cycles per unit time
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.