NCFE Final Review- Physical Science

What is the motion represented in the graphs?

• the object is changing velocity during the entire time
• object is moving at constant velocity the entire time
• object changes velocity then moves at constant velocity
• object is not moving during any time interval

If Bob walks 2 blocks east, 4 blocks south, and 2 blocks west, what distance has he traveled?

• 2 blocks
• 4 blocks
• 8 blocks
• 6 blocks

When a driver applies brakes quickly, why does a book on the seat keep moving forward?

• Gravity pushes the book forward
• No frictional force acts on the book
• Brakes apply force only to the car, but not to the book
• Book accelerates in direction of applied force

If you push a book across a table, which of the following describes the reaction force?

• Book pushes on the table
• Book pushes on you
• Table pushes on book
• You push the table

Which of the elements is listed as a metalloid?

• Carbon
• Antimony
• Sulfur
• Helium

Which material would be classified as homogeneous?

• Stainless steel bolt
• Granite rock
• Soda pop
• Apple

What happens to the molecules during segment II?

• energy of the molecules forms chemical bonds
• energy of the molecules breaks chemical bonds
• energy of the molecules overcomes intermolecular attractions
• energy of molecules strengthens intermolecular attractions

What phase change occurs during segment IV of the graph?

• solid to liquid
• solid to gas
• liquid to gas
• liquid to solid

Which element is represented by the diagram?

• Magnesium
• Sodium
• Titanium
• Vanadium

Which element could have the dot diagram shown?

• carbon
• helium
• magnesium
• potassium