Molecular Clocks

What is the primary purpose of a scientific model?

• To serve as a physical object for experiments

• To replace scientific theories

• To eliminate the need for scientific research

• To provide a visual representation of unobservable phenomena

Which scientist is credited with creating a well-known model of the atom?

• Albert Einstein

• Marie Curie

• Isaac Newton

• Niels Bohr

How has the Bohr model of the atom changed over time?

• The model was discarded entirely

• Protons were added to the model

• Electron orbits were changed from circular to elliptical

• The nucleus was removed

What does an orrery model?

• The motion of celestial bodies in the solar system

• The water cycle

• The process of photosynthesis

• The structure of an atom

How do modern scientists use computer animations in their work?

• To create fictional stories

• To visualize real-world processes and complex hypotheses

• To replace traditional textbooks

• To entertain audiences