unit 2

Question 1

Column1

Answer 1

Column3

Question 2

carbon

Answer 2

n. Carbon is a chemical element. Carbon is found in coal.

Question 3

carbon dioxide

Answer 3

n. Carbon dioxide is a gas made from one carbon atom and two oxygen atoms. There is carbon dioxide in the smoke from coal power plants.

Question 4

dust

Answer 4

n. Dust is very small’ dry particles of earth or sand. Some people wear medical face masks to avoid breathing in fine dust and germs.

Question 5

emit

Answer 5

v. To emit is to send out gas’ heat’ light’ sound’ etc. This iron emits steam.

Question 6

enable

Answer 6

v. To enable is to make it possible for something to happen. Studying hard will enable the girl to get a good job.

Question 7

grind

Answer 7

v. To grind is to break something into small pieces or powder. We grind wheat to make flour.

Question 8

heal

Answer 8

v. To heal is to become healthy or well again. This ointment will help heal your wounds.

Question 9

integrate

Answer 9

v. To integrate is to make something a part of another larger thing. More women are being integrated into the military.

Question 10

D leading

Answer 10

adj. When something is leading’ it is the most advanced or best. Teresa is the leading expert on brain surgery for dogs.

Question 11

moreover

Answer 11

adv. Moreover is used to introduce information that adds to or supports what has previously been said. Marianne likes to walk to work to save money; moreover’ it is good exercise.

Question 12

object

Answer 12

v. To object is to feel or say that you oppose or disapprove of something. The students object to raising the tuition.

Question 13

pollutant

Answer 13

n. A pollutant is a substance that makes the air or water not safe for use. A pollutant in the water killed this fish.

Question 14

powder

Answer 14

n. Powder is a dry substance in the form of very small grains.. Tumeric is a yellow powder used in cooking.

Question 15

prompt

Answer 15

v. To prompt is to cause someone to do something. The tight deadline will prompt the employee to work very hard.

Question 16

reject

Answer 16

v. To reject is to refuse to accept’ believe in’ or agree with something. I’m afraid the teacher will reject my new idea.

Question 17

skeptic

Answer 17

n. A skeptic is a person who disagrees with particular claims that are generally thought to be true. Kevin is a skeptic because he never believes anyone or anything.

Question 18

substance

Answer 18

n. A substance is a particular type of solid’ liquid’ or gas. Arsenic is a poisonous substance.

Question 19

substantially

Answer 19

adv. If something changes substantially’ it changes a lot. The price of the apartment went up substantially

Question 20

ton

Answer 20

n. A ton is a unit for measuring weight equal to 2000 pounds or 907.2 kilograms. This dump truck can carry up to 25 tons

Question 21

transport

Answer 21

n. Transport is the system or method of carrying passengers or goods from one place to another. Cargo ships are used for the transport of manufactured goods.