Seismic wave. Seismic waves are waves of energy that travel through the Earth's layers, and are a result of earthquakes, volcanic eruptions, magma movement, large landslides and large man-made explosions that give out low-frequency acoustic energy. Many other natural and anthropogenic sources create low-amplitude waves commonly referred to as ambient vibrations.
Well, maybe peanut butter isnât the best example. Itâll be a long time before you inherit all those peanuts. Peanut butter in a plastic jar at the supermarket usually has a sell-by date of about 18 months after it hits the shelf. Past this date, if itâs unopened itâs still perfectly good.
1 Opened jar of mustard: 1 year (refrigerator) 2  Opened bottle of olive or vegetable oil: 4 months. 3  Shredded Parmesan cheese: 1 month (refrigerator) or 3-4 months (freezer)  Opened jar of natural peanut butter: 4 to 6 months (refrigerator) or 2-3 months (freezer)