Heritage and Mysteries of the Past

______________ are objects that are made and put into space by people. They collect, ________________, and send ________________, ________________ pictures.

• Satellites

• data

• back

• high-resolution

Satellite images of ________________ are used by ________________ to find important ________________ sites.

• heritage sites

• archaeologists

• archaeological

Archaeologists study the (a)   of humans.

They look for (a)   left in the ground by people in the past.

These are often (a)   , tools, and works of art.

Heritage sites are places that were very important to a (a)   of the past.

Over time, the weather (a)   these areas, and people build over them.

They are covered up and (a)   , so they are hard to find.

Satellite images help archaeologists to find heritage sites. They look for changes in the land that don't seem (a)   .

Once they find those (a)   , they can study them.