Energy/Physics
Describe the complete energy transferals/transformations of the following:
A car rolling down a hill hits the brakes to stop at the bottom, causing the brakes to become very hot
What is Gravitational potential energy transforms into kinetic energy transforms into thermal energy transferred from the car to the brakes
An example of an element: 1) H2O 2) CO2 3) He 4) NaCl
What is He?
This is a change that creates new substances
What is a chemical change?
Name Earth's 4 layers
What is crust, mantle, outer crust, inner crust?
If a population of rabbits increases rapidly, this is likely to happen to the grass they eat.
What is it will decrease?
There is wind push a sail boat 40 N West. The friction of the water is pushing back in the opposite direction of 15 N. What is the net force as a vector?
What is 25 N West
What are the reactants in this chemical reaction?
H₂ + Cl₂ → 2HCl
What are H2 and Cl2
A block of ice melting into water is an example of this kind of change.
What is Physical Change?
Plate boundary where plates are colliding
what is convergent plate boundary?
Sexual reproduction allows for different combinations of traits, called _________ that may be neutral, beneficial, or harmful
What are variations?
The law that states that an object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
What is Newton's First Law of Motion
This is a molecule made up of two different elements
What is a compound?
This is the moon phase that follows a full moon.
What is a waning gibbous?
Describe the steps of the water cycle
what is evaporation, condensation, precipitation, runoff?
Unlike prokaryotes, these life forms have nuclei and may be multicellular
What are eukaryotes?
Kinetic Energy depends on these two things:
What are mass and velocity?
This kind of reaction releases more energy than it absorbs
what is an exothermic reaction?
These ocean movements are caused mainly by the change in the gravitational pull of the moon.
What are tides?
These are formed when different types of air masses collide, causing weather changes and precipitation
what are fronts?
In a food web, this group of organisms breaks down dead plants and animals, returning nutrients to the soil.
What are decomposers?
This type of energy transfer occurs when Earth’s surface is heated by the Sun’s rays.
What is electromagnetic radiation?
This kind of reaction uses oxygen and a type of fuel to produce carbon dioxide and water
what is combustion?
This is the reason we experience a change of seasons on Earth.
What is the tilt of Earth's axis?
These organisms make their own food and form the base of a food web.
What are producers?
This cell structure acts like a gatekeeper, controlling what enters and leaves the cell, and is found in both plant and animal cells.
What is the cell membrane?