Grade 8 · Science · Building Confidence
Free Science Concepts and Evidence worksheet - version 20
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 · Building confidence · 8 questions · Version PG-1DW8IMG-1751
What does Newton's second law relate?A. Speed with direction B. Force, mass, and acceleration C. Conduction D. They rearrange into new substances
What is evidence of a chemical change?A. Total mass is conserved B. They rearrange into new substances C. Repel D. Formation of a new substance
What happens to atoms during a chemical reaction?A. They rearrange into new substances B. Conduction C. Total mass is conserved D. Formation of a new substance
What is velocity?A. Formation of a new substance B. Force, mass, and acceleration C. Speed with direction D. Repel
What do like electric charges do?A. Total mass is conserved B. The number of cycles per unit time C. Repel D. Formation of a new substance
What is a wave's frequency?A. The number of cycles per unit time B. Repel C. Total mass is conserved D. Force, mass, and acceleration
What transfers thermal energy by direct contact?A. Repel B. Force, mass, and acceleration C. Conduction D. Formation of a new substance
How is mass affected in a closed-system reaction?A. Repel B. Total mass is conserved C. They rearrange into new substances D. Speed with direction
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 20
- What does Newton's second law relate?Force, mass, and acceleration
- What is evidence of a chemical change?Formation of a new substance
- What happens to atoms during a chemical reaction?They rearrange into new substances
- What is velocity?Speed with direction
- What do like electric charges do?Repel
- What is a wave's frequency?The number of cycles per unit time
- What transfers thermal energy by direct contact?Conduction
- 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.