Evidence of Evolution
Forces & Gravity
Electric/Magnetic Force
Newton's Laws and Motion
100
What is this an example of?
Natural Selection
100
What 2 things determine the strength of gravity
DISTANCE between objects and the MASS of both objects
100
T or F? (You must get BOTH answers correct):
1. Electric charges that are alike attract each other
2. If a substance has more electrons, it is negatively charged.
1. F
2. T
100
How 2 things could you do to make this object travel slower in regards to FORCE and MASS? (Keep in mind F = MA or rearranged, A = F/M)
Lower the force or Increase the mass
200
Give 2 pieces of evidence we use to prove the theory of evolution
Answers may vary
1) Comparative Anatomy
2) Comparative DNA
3) Compare Fossils
4) Observe current evolution (bacteria)
5) Comparative Embryology
200
Calculate the Net Force:
224 N to the right
200
Draw EARTH with:
-Magnetic Poles labeled
-magnetic field lines
-arrows showing the direction of the magnetic field current.
200
Which line shows total distance and which line shows displacement?
Blue = total distance
Red line = Displacement
300
Give one way scientists use the fossil record to help prove evidence of evolution?
Answers may vary:
- Compare anatomy of current animals to old fossils to see changes
- Examine where fossils are in the layers of rock to see WHEN animals were present
- Examine the environment from where the fossils were found to see HOW they lived
300
Decide if the following is balanced or unbalanced:
Human floating through space
Balanced, nothing is there to push or pull on the astronaut, therefore no forces = Balanced.
300
Draw a magnet with:
-Poles labeled
-magnetic field lines
-arrows showing the direction of the magnetic field current.
300
Which law is best shown below:
3rd law
400
Give one vestigial structure in humans
Answers may vary:
Appendix, tailbone, inner eyelid, wisdom teeth, tonsils, arrector pili (goosebumps), hiccups, etc.
400
List 3 Contact Forces and 3 Non-Contact Forces
Contact
Friction, Applied, Normal, Tension, Air Resistance
Non Contact
Gravity, Electrical, Magnetic
400
What are the three subatomic particles and their charges?
electron -
proton +
Neutron ( )
400
Which car would produce more force against a wall, or hit harder on a wall...
The small car or the large truck?
Trick Question: Both could hit with more force, It depends on how fast they are moving too.
If the large truck is moving very slowly, it will not hit a wall with much force. But if the small car was moving very quickly, it would definitely hit with more force.
F = M x A
500
Name the 3 types of Structures we look at to determine evolutionary relationships
Homologous, Analogous, Vestigial
500
Which model would have the MOST GRAVITATIONAL FORCE
Model 3
500
Draw a balloon next to a soda can on its side.
-Label the charge of the balloon if it has been rubbed on wool
-label the charge of the soda can
- Draw an arrow to show the attractive force between them
500
Write the 3 laws of motion using their shortened name:
Ex: 1st - Law of ___________
2nd - Law of ___ = _______
3rd law _____-______ Law
1st = Law of INERTIA
2nd = Law of F = MA
3rd = Action-Reaction Law