Matter & Reactions
A change that only affects the form or state of matter but does not create a new substance.
Physical change
Speed is calculated using what formula?
Speed= distance/time
At what type of plate boundary does new ocean crust form as plates move apart, creating mid-ocean ridges?
Divergent boundary
The variety of organisms living in an ecosystem is called what?
Biodiversity
Which body system is responsible for moving oxygen and nutrients through the body using blood?
Circulatory system
A nail sits outside and begins to rust over time.
Is this a physical change or chemical change?
Chemical change
An object travels 500 meters in 12 seconds. What is its speed?
41.6 m/s
At what type of plate boundary do plates slide past each other, commonly causing earthquakes?
Transform boundary
The series of changes that occur on surfaces where no soil or organisms exist
Primary succession
Which body system allows the body to take in oxygen and remove carbon dioxide?
Respiratory system
In the chemical formula 2H₂O, how many hydrogen atoms are present?
4
This law states that objects remain at rest or in motion unless acted upon by a force also called inertia.
Newton’s First Law
At what type of plate boundary do two continental plates collide, forming large mountain ranges?
Convergent boundary
Succession that occurs when soil already exists after a disturbance.
Secondary Succession
What type of reproduction involves one parent and produces genetically identical offspring?
Asexual reproduction
A student mixes 10 g of baking soda with 15 g of vinegar in a closed container.
After the reaction, the total mass of the products is measured to be 25 g.
Is mass conserved in this reaction?
Yes
If a 10 kg object accelerates at 2 m/s², what force is applied?
20N
At what type of plate boundary does one plate sink beneath another, often forming volcanoes?
Convergent boundary
In an energy pyramid, what happens to energy as it moves up trophic levels?
Energy Decreases
What type of reproduction involves two parents and results in genetic variation in offspring?
Sexual reproduction
Which process is an example of a chemical reaction that rearranges atoms while conserving mass?
Which law explains why a rocket launches upward when gases push downward?
Newton’s Third Law
At what type of plate boundary does seafloor spreading occur, helping create new ocean basins?
Divergent boundary
Organisms that make their own food and form the base of the food chain.
Producers
Variations in traits that help an organism survive and reproduce in its environment are called what?
Adaptations