Expert

Vocabulary: I will read the words, meanings, and sample sentences. Then, repeat after me. unprecedented /uhn-PRES-i-den-tid/ [adjective] – never having happened or existed before The scientist described the discovery as unprecedented in modern astronomy. swirling /SWUR-ling/ [adjective] – moving around quickly in a circular motion The artist painted swirling clouds above the mountains. surround /suh-ROUND/ [verb] – to be all around something on every side Tall trees surround the small village. antenna /an-TEN-uh/ [noun] – a device used for sending or receiving radio or television signals The station installed a new antenna to improve communication. evolved /ih-VOLVD/ [verb] – to develop gradually over a long period of time Languages evolved…
Read more

Vocabulary: I will read the words, meanings, and sample sentences. Then, repeat after me. preserve /pri-ZURV/ [verb] – to keep something as it is, especially in order to prevent it from decaying or being damaged or destroyed Efforts to preserve wetlands have increased in many countries. peril /PER-uhl/ [noun] – great danger or serious risk Several animal species remain in peril because of habitat loss. regulate /REG-yuh-leyt/ [verb] – to control something, especially by making rules Governments regulate wildlife trade to prevent illegal activity. sustainable /suh-STEY-nuh-buhl/ [adjective] – able to continue over a long period of time without damaging the environment Many companies are searching for sustainable ways to produce…
Read more

©(AP Photo/John Raoux) Vocabulary: I will read the words, meanings, and sample sentences. Then, repeat after me. interference /in-ter-FEER-uhns/ [noun] – a situation in which something prevents a process or activity from happening normally Technical interference delayed the launch of the research satellite. cadence /KEY-duhns/ [noun] – the regular pattern or rhythm of something The project continued at a steady cadence throughout the year. overhaul /OH-ver-hawl/ [noun] – a complete examination of a system with changes made if necessary The government announced an overhaul of transportation policies. threshold /THRESH-ohld/ [noun] – the level at which something starts to happen or change The temperature passed the threshold needed for the chemical…
Read more

Vocabulary: I will read the words, meanings, and sample sentences. Then, repeat after me. elusive /ih-LOO-siv/ [adjective] – difficult to find, define, or achieve Scientists searched for an elusive mushroom species in the forest. conservation /kon-ser-VEY-shuhn/ [noun] – the protection of plants, animals, and natural areas The organization supports conservation of rare species. biodiversity /bahy-oh-di-VUR-si-tee/ [noun] – the number and types of plants and animals that exist in a place Tropical forests have rich biodiversity. ecosystem /EE-koh-sis-tuhm/ [noun] – all the living things in an area and the way they affect each other Fungi play an important role in the forest ecosystem initiative /ih-NISH-uh-tiv/ [noun] – a new plan or…
Read more

Vocabulary: I will read the words, meanings, and sample sentences. Then, repeat after me. redesign /ree-di-zahyn/ [noun] – a new design or plan made to improve something that already exists The company introduced a redesign of the product package to make it easier to open. geographic /jee-uh-GRAF-ik/ [adjective] – related to the physical features, location, or areas of the Earth The teacher explained the geographic features of different regions during the lesson. comprehensive /kom-pri-HEN-siv/ [adjective] – including many details and covering a wide range of information The report gives a comprehensive explanation of the school’s new safety rules. safeguard /SEYF-gahrd/ [noun] – a measure or action that protects something from…
Read more

©JHU/APL, NASA via AP Vocabulary: I will read the words, meanings, and sample sentences. Then, repeat after me. plunge /PLUHNJ/ [verb] – to fall suddenly and quickly from a high position The aircraft plunged into the ocean during a storm. orbit /OR-bit/ [noun] – the curved path that a spacecraft follows around a planet The satellite stayed in orbit for several years. reentry /ree-EN-tree/ [noun] – the act of returning to Earth’s atmosphere from space The capsule made a safe reentry after the mission. radiation /ray-dee-AY-shuhn/ [noun] – energy in the form of waves that can be harmful to living things Scientists study radiation to understand space conditions. eccentric /ik-SEN-trik/…
Read more