State Test Practice Science 2

Question 1

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

Accepted Answer

Stratosphere

Answer

Troposphere

Answer

Mesosphere

Answer

Thermosphere

Question 2

What happens to atoms during a chemical reaction?

Accepted Answer

Atoms are rearranged to form new substances

Answer

Atoms are created from nothing

Answer

Atoms are destroyed

Answer

Atoms change from one element to another

Question 3

What is the difference between a food chain and a food web?

Accepted Answer

A food chain shows one path of energy flow; a food web shows multiple interconnected paths

Answer

They are the same thing

Answer

A food chain includes decomposers; a food web does not

Answer

A food web only applies to ocean ecosystems

Question 4

Which of these is a renewable energy source?

Accepted Answer

Solar power

Answer

Coal

Answer

Natural gas

Answer

Oil

Question 5

What is the function of the nucleus in a cell?

Accepted Answer

To control cell activities and store genetic information (DNA)

Answer

To produce proteins

Answer

To generate energy for the cell

Answer

To transport materials across the cell membrane

Question 6

What type of wave requires a medium to travel through?

Accepted Answer

Mechanical waves

Answer

Electromagnetic waves

Answer

Light waves

Answer

Radio waves