Copy of 7th Grade Final Exam 2025-05/08/2025 14:12

What information does a chemical formula provide?

• A chemical formula provides the number of electrons in an element

• A chemical formula provides the chemical makeup of a compound

• A chemical formula provides the structure of an atom

• A chemical formula provides the boiling point of a molecule

Anything that has mass and takes up space is called.

• rust

• density

• matter

• volume

In the formula H2O, what does the number 2 indicate?

• There are two atoms of hydrogen in this molecule

• Each hydrogen atom loses two electrons to the oxygen atom

• Each hydrogen atom gains two electrons from the oxygen atom

• Two atoms each of hydrogen and oxygen are in this molecule

The smallest particle of an element is a(an) _________.

• atom

• molecule

• cell

• ion

Which of these are true of tsunamis?

• They can cause massive flooding.

• They are caused by high winds.

• They are caused by earthquakes in the ocean.

Which of the following conditions are needed for hurricanes to form?

• A. warm ocean water

• B. low pressure

• C. cold ocean water

• D. high pressure

All weather is energy in motion. Where does this energy come from?

• the water cycle

• the moon's gravity

• the sun's radiation

• heat from the Earth's core

Blizzards, tornadoes, severe thunderstorms and hurricanes all have which of the following similar characteristics:

• They are all areas of locally higher pressure

• They are all areas of locally lower pressure

• They are all areas of locally calm to light winds

• They are all areas of locally dry weather

Which of the following is true about weather and climate?

• A) Weather is scale patterns and trends in global climate, such as a gradual increase in average temperatures and climate is the day to day interactions of air masses.

• B) Weather is the day to day interactions of air masses and descriptions of hot, cold, rainy, etc. and climate is the average conditions for a particular area over a long period of time.

Label the diagram of the Water Cycle. What is label 'a'?

• Evaporation

• Condensation

• Precipitation

• Run-off

• Infiltration