STEM Grade 7

The basic units of structure and function for both plants and animals are

• cells
• organs
• organ systems
• tissues

The diagrams identify major parts of two different human systems. Which statement best describes how the two systems are similar?

• Both systems provide structure to the body
• Both systems contain specialized cells and tissues
• Both systems assume the functions of other failing body parts
• Both systems establish homeostasis and communication

A gas

• has a definite shape but no definite volume
• has a definite volume but no definite shape
• has fast-moving particles

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

The opposite phase of vaporization is 

• sublimation 
• freezing 
• melting 
• condesation 

___________________ weathering is seen at coastal areas.

• Frosting
• Biotic
• Chemical
• Salt wedging

______________ take place when dirt, pebbles, rocks and boulders slide down a slope together.

• Flows
• Landslides
• Creeps
• Mud Flow

The _____________ river rises in Central Africa and flows south eastward to the Indian Ocean.

• Zambezi
• Nile
• Niger
• Equador

__________ translates source code into intermediate code and executes it.

• Compiler

• Assembler

• Interpreter

• Translator

Computer instructions written and executed in a specific sequence are called

• Computer Program
• Computer Language
• Generation
• Tanslation