Second Grade Vocabulary for Open Court
Unit 4: Fossils
Unit 4: Fossils
4-1 Fossils Tell of Long Ago
amber: a yellowish sap from plants that hardens and becomes a fossil
fossil: a plant, animal, or imprint that has turned to stone
extinct: not alive today; all members of the group or species have died out
peat: swampy forest soil
mammoth: a kind of elephant that lived millions of years ago
preserved: has not rotted
seeps: leaks slowly
imprint: to press into something and leave a mark
4-2 The Dinosaur Who Lived in My Backyard
hatched: broke out of an egg
neighborhood: the area around your home
swamp: an area of wet land
rescue: to save someone who is in danger of harm
sprinkler: something used for watering the lawn
4-3 Dinosaur Fossils
fossils: hardened remains of an animal or plant that lived long ago
hardened: became solid
scientists: people who study things in nature
difficult: not easy
extinct: no longer living
chance: luck
4-4 Why Did The Dinosaurs Disappear?
climate: the average, or normal weather conditions of a place
protection: the keeping of someone or something from harm
moisture: water or other liquid in the air or on a surface
erupt: to break out suddenly with force
discovery: something that is seen or found out for the first time
starve: to not have enough food
4-5 Monster Tracks
clues: hints that help solve a mystery or a problem
prehistoric: belonging to a time before people started writing history
imprint: to mark by applying pressure
mold: a hollow form that material is poured into to make a shape
instructions: directions
4-6 Let’s Go Dinosaur Tracking!
analyze: to look at very carefully
clue: hint
paleontologist: a scientist who studies fossils and the past
limestone: a rock that often contains fossil prints
tracks: footprints
canteen: like a bottle
Other:
ancient: from long ago, very old
form: to construct or make, to shape into something, a worksheet to complete
mold: a special form used to shape something, growing bacteria,
amber: a yellowish sap from plants that hardens and becomes a fossil
fossil: a plant, animal, or imprint that has turned to stone
extinct: not alive today; all members of the group or species have died out
peat: swampy forest soil
mammoth: a kind of elephant that lived millions of years ago
preserved: has not rotted
seeps: leaks slowly
imprint: to press into something and leave a mark
4-2 The Dinosaur Who Lived in My Backyard
hatched: broke out of an egg
neighborhood: the area around your home
swamp: an area of wet land
rescue: to save someone who is in danger of harm
sprinkler: something used for watering the lawn
4-3 Dinosaur Fossils
fossils: hardened remains of an animal or plant that lived long ago
hardened: became solid
scientists: people who study things in nature
difficult: not easy
extinct: no longer living
chance: luck
4-4 Why Did The Dinosaurs Disappear?
climate: the average, or normal weather conditions of a place
protection: the keeping of someone or something from harm
moisture: water or other liquid in the air or on a surface
erupt: to break out suddenly with force
discovery: something that is seen or found out for the first time
starve: to not have enough food
4-5 Monster Tracks
clues: hints that help solve a mystery or a problem
prehistoric: belonging to a time before people started writing history
imprint: to mark by applying pressure
mold: a hollow form that material is poured into to make a shape
instructions: directions
4-6 Let’s Go Dinosaur Tracking!
analyze: to look at very carefully
clue: hint
paleontologist: a scientist who studies fossils and the past
limestone: a rock that often contains fossil prints
tracks: footprints
canteen: like a bottle
Other:
ancient: from long ago, very old
form: to construct or make, to shape into something, a worksheet to complete
mold: a special form used to shape something, growing bacteria,