6R (1)
6R (2)
7R (1)
7R (2)
100

(adj.) If someone is ____ of doing something, he or she lacks the necessary skills or capacity.

What is incapable?

100

(n.) When something is gradually worn away by wind or water, the process is called ____.

What is erosion?
100

(v.) When you ____ something, you push or drive it forward with force.

(n.) The main point of an argument or criticism is its ____.

What is thrust?

100

(adj.) Something that is ____ can be easily noticed or understood.

What is obvious?

200

(adj.) A natural disaster that causes ____ destruction affects a large number of people.

(n.) A ____ is a large amount of something. The ____ of an object is a scientific term that refers to how much material an object has.

What is mass?

200

(n.) A ____ is the possibility of injury, loss, or danger.

(v.) If you ____ breaking your leg, you do something that could possibly cause you to break your leg.

What is risk?

200

(v.) When you discover what items ____ of, you learn what they are made of, composed of, or formed from.

What is consist?

200

(v.) When you respond to something, either with feelings, actions, or words, you ____ to it.

What is react?

300

(n.) A heavy rain- especially one that causes flooding- is a ____.

(v.) If people ____ you with birthday cards, they give you lots of them.

What is deluge?

300

(n). A ____ is a natural formation or a constructed fence or wall that stops the movement of something, such as water or traffic.

(n.) When people speak different languages, there is a language ____ that blocks the communication.

What is barrier?

300

(n.) A particular way of doing something is a ____ or a method.

What is technique?

300

(n.) A ____ is a machine or all the parts of a device that work together. A ____ can also be a process, system or technique.

What is mechanism?

400

(n.) The remains of something broken or destroyed are called ____.

What is debris?

400

(n.) Any relatively large watercraft can be called a ____.

(n.) Any container that holds something is a ____.

What is vessel?

400

(n.) Related cells that are alike and work together form ____, one of the materials that give structure to an animal or plant.

(n.) A ____ is also a thin mesh of fabric or paper than can be absorbent.

What is tissue?

400

(v.) When something can ____ properly, it is performing or operating normally.

(n.) The ____ of something is its purpose.

What is function?

500

(adj.) Something that is ____ cannot be obtained or is out of reach.

What is inaccessible? 

500

(v.) Something that lifts something else, such as an emotion or an object in water, is said to ____ it.

(n.) A floating object used to mark a boundary or underwater hazard is called a ____.

What is buoy?
500

(v.) When you ____ something, you judge it to determine its worth, condition, or significance.

What is evaluate?

500

(v.) If something happens to ____, it falls apart, loses its value, or stops working.

(n.) Something suffering a ____ loses energy, health, position, or structure.

What is collapse?