Question

the science fair was filled with colorful posters and creative projects. one student demonstrated how a volcano erupts using baking soda and vinegar. another showed how plants grow faster in sunlight than in shade. the fair gave students a chance to share what they had learned through experiments. 11. what is the main idea of the passage? a) students presented different science projects at the fair. b) baking soda and vinegar make a volcano erupt. c) plants grow faster in sunlight. d) the fair was very noisy and crowded. 12. which detail best supports the main idea? a) one student demonstrated how a volcano erupts using baking soda and vinegar. b) another showed how plants grow faster in sunlight than in shade. c) the fair gave students a chance to share what they had learned through experiments. d) the science fair was filled with colorful posters. 13. what can you infer about the students? a) they were nervous to present. b) they learned new things through their projects. c) they didnt enjoy the fair. d) they were forced to attend.

Explanation:

1. The passage focuses on students presenting various science - related projects at the fair. Options b, c are just individual projects, and option d is not mentioned.
2. Options a and b are individual project details, option d is about posters. Option c emphasizes the overall purpose of the fair which is sharing what students learned through experiments, supporting the main idea.
3. Since students are sharing what they learned through experiments at the fair, it can be inferred that they learned new things through their projects. There is no evidence for nervousness, lack of enjoyment, or being forced.

Answer:

1. a) Students presented different science projects at the fair.
2. c) "The fair gave students a chance to share what they had learned through experiments."
3. b) They learned new things through their projects.