The word affect is a verb. It shows action.
How much you study will affect how well you do on the test.
The amount of sleep you get at night will affect your performance level the next day.
The word effect is a noun. An effect is the result of some action.
The effect of good studying is a good grade on the test.
The effect of a good night’s sleep is feeling rested the next day.
Use the word affect as a verb and effect as a noun.
It’s your turn. Which word – affect or effect – should go into this sentence? The fog will negatively ____ the flying conditions today. Did you figure out that you need a verb here? Good for you!