Unit 1
Unit 2
Unit 3
Unit 4
Random
100
The kinetic energy of an object depends on what two things?
The kinetic energy of an object depends on its velocity and mass.
100
What 2 ways can you increase the gravitational force between two objects?
The strength of the gravitational force between two objects depends on two factors, mass and distance.
Increase mass
Bring closer together
100
How are rock layers organized?
Rock layers are formed from the bottom-up:
Youngest rock on top
Oldest rock on bottom
100
Waves transfer what?
A wave is a disturbance that transfers energy from one place to another without transferring matter.
100
Where is the magnetic field the strongest between two magnets?
In the middle of the magnets. The opposite poles of the magnet are facing each other so they are attracted to each other.
200
What is kinetic energy? What is potential energy?
Kinetic energy is energy of motion. Potential energy is the energy stored in an object because of its position.
200
Draw a solar eclipse. Draw a lunar eclipse. Label both!
Solar Order: Sun, Moon, Earth
Lunar Order: Sun, Earth, Moon
200
Define natural selection.
Process by which organisms with favorable traits produce more successful offspring than organisms with less-favorable traits, causing the favorable traits to become more common in the population.
200
Draw a transverse wave. Draw a longitudinal wave.
200
What is the kinetic energy formula?
KE= .5 x mass x velocity2
300
What is newtons first law of motion? What is newtons second law of motion? What is newtons third law of motion?
1. A body at rest stays at rest and a body in motion stays in motion at a constant velocity unless acted on by an unbalanced force
2. Acceleration is directly proportional to force and inversely proportional to mass (F = ma or a = F/m).
3. For every action there is an equal but opposite reaction.
300
How does the earth's revolution around the sun affect seasons?
We have seasons because of Earth’s Tilt. Which season it is depends on whether you live in the Northern or Southern Hemisphere because the Earth’s axis tilts toward one of the two as it moves around the sun.
300
Define adaptation.
The process by which a population becomes better suited to its environment in order to survive and reproduce.
300
What are the differences between Electromagnetic waves and mechanical waves?
Electromagnetic waves can travel through a vacuum (free space), whereas mechanical waves cannot. They need a medium to travel.
300
What moon phase is required for a solar eclipse to occur? What moon phase is required for a lunar eclipse to occur?
A lunar eclipse can only take place at the phase of full moon. A solar eclipse can only take place at the phase of new moon.
400
Describe balanced and unbalanced forces. What are their net forces?
Balanced: Objects are motionless (not moving-no acceleration). Net force = zero.
Unbalanced: Cause a change in motion (speeding up, slowing down, changing directions- acceleration). Net force is greater than zero.
400
How do you make an electromagnet stronger or weaker? Think about the 3 C's!
wrapping the coil around a piece of iron (such as an iron nail)
adding more turns to the coil
increasing the current flowing through the coil
400
What are homologous structures? What are analogous structures?
Homologous: Same structure different function
Analogous: Same function different structure
400
How can you increase a waves energy?
Increase the amplitude and increase the frequency.
400
What is a variation in traits?
Differences among individuals within the same species that may help give that species a better chance at surviving different environmental changes.
500
Opposite electrical charges will do what? Like (same) charges will do what?
Opposites attract
Same repel
500
Draw and label the eight moon phases.
500
What are the 5 types of mutations (at the DNA Sequence level) and explain what they are.
Point Mutation: Changing in one base.
Substitution: Replacing a sequence of bases.
Inversion: Reversing a sequence of bases.
Insertion: Adding a base.
Deletion: Removing a base.
500
What allows us to see things?
Visible light waves and reflection
500
Describe Transparent, Translucent, Opaque
Transparent: All light passes through an object.
Translucent: Some light passes through an object.
Opaque: No light passes through an object.