Secrets of the Ice
This term refers to the thick sheets of ice that preserve ancient items for thousands of years.
What are Glaciers?
This is the general name for any living thing that is destructive or troublesome to humans or crops.
What is a Pest?
Glacial archaeologists use this tool to determine exactly how old a frozen object is.
What is Radiocarbon Dating? (Accept: "Carbon dating")
If a species no longer exists on Earth, it is said to be this.
What is Extinct?
This text feature is found directly under a photo or illustration and explains what is happening in the image.
What is a Caption?
Because these items have been frozen, they are often found in this condition, meaning they haven't rotted or changed.
What is Preserved? (Accept: "In pristine condition")
These "helpful" insects are often used to eat aphids, acting as a natural way to control pests.
What are Ladybugs? (Accept: "Ladybird beetles")
This is a "natural" way to fight pests by using their own enemies against them.
What is Biological Control?
This word means to "bring back to life" or "make active again," like a pest population or an interest in history.
What is Revive?
Located at the back of the book, this alphabetical list provides definitions for the "bold" vocabulary words found in the text.
What is a Glossary?
Scientists found this famous "Iceman" in the Alps, complete with his tools and clothing.
Who is Ötzi (The Iceman)?
Farmers use these chemicals to kill pests, though they can sometimes harm the environment.
What are Pesticides?
Frozen items must be kept in these special containers so they don't fall apart when they hit warm air.
What are Climate-controlled cases? (Accept: "Freezers" or "Vacuum-sealed bags")
An object made by a human being, typically one of cultural or historical interest.
What is an Artifact?
This is a "mini-story" or extra set of facts located in a box to the side of the main article.
What is a Sidebar?
This is the main reason ancient artifacts are starting to emerge from the ice today.
What is Climate Change? (Accept: "Melting ice" or "Global warming")
This flying pest is known for traveling in massive swarms and eating entire fields of grain in minutes.
What are Locusts? (Accept: "Grasshoppers")
Scientists use this type of "code" found in living things to identify ancient remains.
What is DNA?
To be very careful and precise, especially when digging for ice secrets.
What is Meticulous?
These short phrases (often in bold) act like titles for specific sections, helping the reader predict what they will read next.
What are Headings (or Subheadings)?
This specific type of scientist studies human history by looking at artifacts found in the ice.
Who is an Archaeologist? (Specifically, a Glacial Archaeologist)
This term describes a pest that has been brought to a new place where it has no natural predators.
What is an Invasive Species?
This is the process of rotating crops to keep pests from getting too comfortable in one field.
What is Crop Rotation?
This word describes something that is helpful or good, like a "good" bug in a garden.
What is Beneficial?
Expository texts often use this type of visual tool to show the order of historical events, such as when different ice artifacts were found.
What is a Timeline?