Question: Choose your answer.

A student is growing some plants for an experiment. She notices small white spots on the leaves. Which tool should she use to get a better look at the spots?
My Answer: hand lens

Question: Choose your answer.

Gold atoms can be identified based on the number of which subatomic particles?
My Answer: protons

Question: Choose your answer.

Why would explorers use a compass when traveling to unknown lands?
My Answer: to locate a direction to travel

Question: Choose your answer.

Based on the evidence available at the time, early models of the solar system stated that all objects in space orbited Earth. In the 16th century, an astronomer reevaluated the evidence and proposed a model of the solar system that is still in use. What part of this model corrected the mistake in previous solar system models?
My Answer:
The Sun is at the center of this model.