GRADE 8_UNIT 11_03

I tried to speak to the professor, but he was __________.

• impossible

• uninformed

• unavailable

• unable

• unavoidable

Will humans live __________ Mars someday?

Thomas Edison was responsible __________ more than one thousand inventions

Scientists are __________ the possibility of living on Mars.

• exploring

• patent

• incurable

• enormous

• techniques

Marie Curie was a Polish __________ who discovered the elements poloniumand radium.

• chemist

• conservationist

• software developer

• inventor

Match the following

• a person who works to protect the environment, plants, animals and natural resources

• explorer

• a person who travels to unknown places in order to find out what is there

• inventor

• a scientist who studies living things

• conservationist

• a person who has invented something

• biologist

Christopher Columbus was an Italian __________ who discovered the Americas.

• explorer

• archaeologist

• physicist

• biologist

Match the following

• a scientist who works with Chemicals or studies their reactions

• archaeologist

• a person who studies the buildings, graves, tools, and other objects of people who lived in the past

• software developer

• a scientist who studies physics

• physicist

• a person who builds and creates Computer programs

• chemist

There are now fears that war is __________.

• impossible

• uninformed

• unavailable

• unable

• unavoidable

Kevin is so __________. His room is always a mess.

• unforeseen

• impatient

• impolite

• untidy

• immature