Harnessing Human Energy
When something is in motion, what type of energy does it have?
Kinetic Energy
A force between surfaces exerted in the direction opposite to an object's motion is...
friction
True or False: The moon makes its own light.
False
What type of graph did we use to show how traits varied in a population?
histogram
Where are body structures inherited from?
ancestor populations
When something has the ability to make things move or change in the future, it has this type of energy.
Potential Energy
greater
How does the light from the sun travel?
In straight lines
A trait that helps an individual survive in an specific environment is...
adaptive trait
Two species having shared body structures is evidence that they share a .....
common ancestor
A generator is a machine that converts kinetic energy to this type of energy.
Electrical
If the same strength force is exerted on two objects, what could cause a different change in velocity?
different masses, different velocities, different direction
How much of the moon is always illuminated?
Half
How do individuals in a population get their traits?
From their parents' genes
How can we tell if two species are more closely related. to each other than a third species?
the amount of body structures they share
What are two types of energy sources emergency workers can use to power their devices like radios and flashlights?
hydroelectric power, solar power, fuel, wind power, and human power.
During a collision, how can we describe the force exerted on both objects?
The same strength, opposite direction
How long does it take to see all the phases of the moon?
About a month
What is a random change to a gene that sometimes results in a new trait called?
mutation
What limb bone pattern do all tetrapods share?
one bone-two bones-many bones-digits
Finish this statement: Energy cannot be created or destroyed, it can only be _______________ and _______________.
Converted and transferred
What three things affect how an object changes velocity?
direction of force, strength of force and mass of objects
Why do we see different phases of the moon?
Because the Moon moves to different positions around Earth, so we see different amounts of the illuminated half of the Moon.
Genes are instructions for creating this type of molecule.
protein molecule
What could cause differences in body structures that leads to a speciation event?
environmental changes