MCAS MCAS Science and Technology/Engineering 3

Question 1

What is the term for the transfer of heat through direct contact between objects?

Accepted Answer

Conduction

Answer

Conduction is the transfer of heat energy through direct contact between materials or objects.

Question 2

Which layer of Earth's atmosphere contains the ozone layer?

Accepted Answer

Stratosphere

Answer

The ozone layer is found in the stratosphere, approximately 15–35 km above Earth's surface, where it absorbs harmful UV radiation.

Question 3

What is the role of decomposers in an ecosystem?

Accepted Answer

They break down dead organic matter and recycle nutrients

Answer

Decomposers such as fungi and bacteria break down dead organic matter, recycling nutrients back into the soil and ecosystem.

Question 4

What type of circuit allows electricity to flow through multiple paths?

Accepted Answer

Parallel circuit

Answer

In a parallel circuit, current can flow through multiple branches simultaneously, so if one branch breaks, others continue to work.

Question 5

Which process describes water changing from liquid to gas?

Accepted Answer

Evaporation

Answer

Evaporation is the process by which liquid water absorbs heat energy and transitions into water vapor (gas).

MCAS - Massachusetts Comprehensive Assessment System Test Practice Test