Sativa strains of marijuana are known for their uplifting and energizing effects, which can be attributed to the presence of certain dominant terpenes. Some of the terpenes that are commonly found in higher concentrations in Sativa strains include:

1. Pinene: This terpene is known for its piney aroma and its bronchodilator and anti-inflammatory effects. It is often found in high concentrations in Sativa strains and is believed to contribute to the strains' ability to promote focus and concentration.
2. Limonene: This terpene is known for its citrusy aroma and its mood-elevating effects. It is commonly found in high concentrations in Sativa strains and is believed to contribute to the strains' ability to reduce anxiety and improve mood.
3. Caryophyllene: This terpene is known for its spicy, woody aroma and its anti-inflammatory effects. While it's not exclusively a sativa terpene, it can be found in higher concentrations in sativa strains and is believed to contribute to the strains' ability to promote a sense of well-being.
4. Humulene: This terpene is known for its earthy, woody aroma and its anti-inflammatory and appetite-suppressing effects. It is not as common as the other terpenes in sativas but can be found in some strains in higher concentrations.

It's important to note that each strain of marijuana contains a unique combination of terpenes, and the specific dominant terpenes can vary widely depending on the genetics of the plant, as well as the growing conditions and the methods used to extract and process the plant. So a specific strain can have different dominant terpenes than other strains even though they are classified as Sativa.