solar activity

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noun Astronomy.

the sum of all variable and short-lived disturbances on the sun, as sunspots, prominences, and solar flares.

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His boss, whom he admires, is waiting to meet with him about the big project.

His boss, who he admires, is waiting to meet with him about the big project.

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Words nearby solar activity

solanaceous, solander, solanine, solanum, solar, solar activity, solar apex, solar battery, solar cell, solar cells, solar chariot

How to use solar activity in a sentence

Though the sky might be clear, there’s no solar activity happening.
The aurora borealis skipped this Alaska photography class. But some swinging light cords saved the night.|Bailey Berg|February 26, 2021|Washington Post
In the 17th century, Galileo was among the first to spy sunspots, slightly cooler areas on the sun’s surface with strong magnetic fields that are often a precursor to more intense solar activity.
Solar storms can wreak havoc. We need better space weather forecasts|Ramin Skibba|February 26, 2021|Science News
These data suggested the solar activity was at a minimum at the time.
A magnetic field reversal 42,000 years ago may have contributed to mass extinctions|Carolyn Gramling|February 18, 2021|Science News
The team compared the dates of the magnetic event with previous records from ice cores that can reflect changes in solar activity.
A magnetic field reversal 42,000 years ago may have contributed to mass extinctions|Carolyn Gramling|February 18, 2021|Science News

More significant are “grand solar minima,” decades-long periods of reduced solar activity that have occurred 25 times in the last 11,000 years.
How Earth’s Climate Changes Naturally (and Why Things Are Different Now)|Howard Lee|July 21, 2020|Quanta Magazine
Other natural climate variations include solar activity and volcanoes.
Earth Day: Discussing the Coming Climate Crisis With Heidi Cullen|Dominique Browning|April 22, 2012|DAILY BEAST
The eclipse of 1883 was at a time of rapidly decreasing solar activity, yet the Corona had the features of a Sun-spot maximum.
The Story of Eclipses|George Chambers
As to causes, variations in solar activity are naturally receiving attention, and the results thus far are promising.
Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5|Various
That figure, it will be recalled, shows what happens to precipitation when solar activity is increasing.
Climatic Changes|Ellsworth Huntington
The degree of solar activity would have much to do with the final extent of the ice sheets.
Climatic Changes|Ellsworth Huntington
In this connection, however, it must be remembered that solar activity may arise in various ways, as will appear more fully later.
Climatic Changes|Ellsworth Huntington