Energy Transformations
True or false: energy cannot be created or destroyed. It can be transformed or transferred.
True
True or False: Lightning is an example of current electricity.
False! It is static electricity!
True or false: Mass changes during a phase change. For example, an ice cube melting into a puddle.
False
True or false: a population is ONE organism. For example, one frog.
False! It is MANY of the same organism. For example, 10 frogs.
True or false: A box of feathers requires less force to move than a box of bowling balls.
True!
A hand crank flashlight uses _________ energy instead of batteries.
Mechanical
The transfer of negatively charged particles between two objects when they are rubbed together is called _________.
Static electricity
True or false: Sand and water together forms a solution.
False; it is a mixture.
Food chains combine to form a ___________.
Food web
Ice and tile flooring are examples of surfaces with _____ friction.
Low
Radiant energy from the sun transforms into ________ energy when it heats up sand on a beach.
Thermal
Current electricity
What unit measures liquid volume?
A. Liters
B. Grams
C. Seconds
A. Liters
A __________ is an organism's role or job in an enviornment.
Niche
Give two examples of kinetic energy.
A dog running, water flowing in a river, etc.
A toaster transforms _________ energy into _________ energy.
Electrical energy into thermal energy
Objects that have opposite charges will be __________ to each other. For example, a balloon rubbed on hair and then stuck to the wall.
Attracted
Freezing is the removal of __________ from water.
Heat
Describe what a decomposer does and give an example.
A decomposer breaks down dead organisms. Examples are worms, mold, and fungi.
Give two examples of potential energy.
A book on a shelf, a stretched rubber band, etc.
A tuning fork transforms _________ energy into _________ energy.
Mechanical into sound
Objects that have the same charge will _________ each other. For example, two south poles on a magnet.
Repel
Name 3 physical properties of an object.
Texture, size, shape, mass, color, etc.
Describe what an omnivore eats, and give an example.
An omnivore eats both plants and meat from other animals. Examples include humans, bears, and turtles.
What is a push or pull exerted by one object on another?
Force