3rd Fall24 Understanding Our Solar System

Front

How have carbon and oxygen levels changed in our atmosphere over time?

Back

As carbon dioxide decreases due to photosynthesis, oxygen increases.

Front

What is the age of a rock sample with 25% uranium-238?

Back

9,000 million years.

Front

How does Kepler's 3rd law relate the distance of a planet to its orbital period?

Back

The farther the planet from its star, the slower it moves, the longer its year.

Front

What does an ellipse have?

Back

Two foci the object revolves around.

Front

What does the planetary nebular theory explain about our Solar System?

Back

Solar systems form from a planetary nebula that spins and flattens into an accretionary disk.

Front

What is photosynthesis?

Back

The process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.

Front

What is the significance of uranium-238 in dating rocks?

Back

Uranium-238 is used in radiometric dating to determine the age of rocks and minerals.

Front

What is an orbital period?

Back

The time it takes for a planet to complete one full orbit around its star.

Front

What is the definition of a planetary nebula?

Back

A planetary nebula is an astronomical object formed from the outer layers of a star that has shed its material.

Front

What is the relationship between a planet's distance from the sun and its orbital speed?

Back

The farther a planet is from the sun, the slower it moves in its orbit.