n. an object in space that travels around the Earth Satellites are objects that are made and put into space by people.
weather
n. the state of the air and atmosphere at a particular time and place
Over time, the weather damages these areas, and people build over them.
damage
v. to cause harm to something
Over time, the weather damages these areas, and people build over them.
normal
adj. regular; usual
They look for changes in the land that don’t seem normal.
spot
n. a small area of a surface
Once they find those spots, they can study them.
hole
n. an opening into or through something
They found more than 250,000 holes in the ground.
dig
v. to create a hole by moving soil, sand, snow, etc.
People had dug the holes looking for valuable things to steal.
receive
v. to get or be given
They collect, receive, and send information, including pictures.
information
n. knowledge that you get
They collect, receive, and send information, including pictures.
heritage
n. something that is handed down from one generation to another over many years
Satellite images of the Earth are used by archaeologists to find important heritage sites.
site
n. a place where something happened or will happen
Satellite images of the Earth are used by archaeologists to find important heritage sites.
protect
v. to keep from being harmed
These images make finding and protecting these sites much easier.
archaeologist
n. someone who studies objects of the past Archaeologists study the history of humans.
ground
n. the part of the Earth that people can walk on
They look for objects left in the ground by people in the past.
bone
n. the hard pieces that form the frame inside a body
These are often bones, tools, and works of art.
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