Forces
A force that exists between any two objects that have mass
Gravity
The distance between one peak and the next on a wave
Wavelength
Any pull or push that is applied to an object
Force
A characteristic or property of an organism
Trait
Negatively charged particles orbiting the nucleus of an atom
Electron
The SI unit of measure of force
Newton
A triangular piece of clear glass or plastic that can separate white light into different colors
Prism
A force that is carried when supporting a weight or mass
Load
Evidence that an organism once existed in an area; can be a part of the organism, body, or a mark or print left by the organism.
Fossil
Electric charges that build up on an object
Static electricity
A machine that converts mechanical energy into electrical energy
Generator
The point where light rays passing through a convex lens or reflected from a concave mirror come together
Focal point
A systematic plan, often in graphical form, for the construction of something
Design
The study of fossils and the fossil record
Paleontology
How do waves travel and carry energy?
Waves spread out in all directions from an initial pulse of energy. as they spread out they transmit the initial pulse of energy through the medium they travel.
Explain what Newton’s first law of motion states and give an example.
An object in motion will stay in motion unless acted on by another force.
Ex could include position of a traveler in a car that comes to an abrupt halt.
What causes the effect of passenger side mirrors which state, “Objects in Mirror are closer than they appear?”
The mirrors are convex
What are the structural requirements of a bridge?
A bridge must withstand the force of its load, which includes the dead load (the weight of the bridge and materials attached to it) and the live load (the weight of all Bridge traffic). Bridges must also withstand forces of nature such as strong winds and rains, and the sudden shaking of earthquakes. The requirements of the bridge are also determined by its site. including the distance it must span and the height of the road bed, or above the ground or water.
What did the first humans look like? OR
What evidence of common ancestry in diversity relates to human evolution?
The first humans were short and covered with hair. However, the big difference between this creature and monkeys was that it had developed a way to walk upright. The pelvic bones formed more of a bull shape, which allowed for the legs to attach differently. This attachment gave more support for body weight and allowed the animal to stand up. Over time, additional changes in brain size, forehead structure, and Bone thickness occurred.
How do waves interact with each other?
Waves that travel independently interact with each other when they meet. This interaction between waves is known as interference
How do objects acquire electrostatic charge?
Objects acquire charges by 3 means: friction, induction, or conduction
How do light waves behave when they pass from one medium into another?
They can be reflected, absorbed, or some combination. The speed of light is constant in a vacuum but slows down through a medium due to density.
What factors do engineers consider when they design a bridge?
Engineers consider all of the structural requirements of the bridge, including its desired WIDTH and LENGTH, the maximum LIVE LOAD it can carry, and the HEIGHT of the road bed above the water or ground. They also consider the COST of the materials for their design and the cost and time of assembly. The BEAUTY of the bridge, IMPACT ON THE ENVIORONMENT, and ease of MAINTENANCE are also important factors.
How do fossils form?
Some fossil form with the remains of an organism are preserved in sediments such as mud. Overtime, the material surrounding the organism is subjected to pressure and temperature changes. Minerals in the sediment, replace substances in the remains, and the remains become stone. Fossils form when an organism is trapped in the substance that quickly hardens and preserves the trapped organism(such as an insect captured in Amber). Still other fossil forms when the imprint of an organism (such as a footprint) is made in sediment that hardens and preserves the shape of the imprint.
What are the advantages and disadvantages of the arch, the beam, and the suspension bridge?
The arch bridge is especially stable and durable, but may require more materials than other types of bridges. The beam bridge is the simplest type of Bridge to design and build, but requires piers or abutments ( vertical supports ) at regular intervals to support the beams. The beams are also subject to bending and sagging under the weight of vehicles over them. Suspension bridges allow for very long bridge spans, but are complex and expensive to design and build. Without reinforcement or support, the deck may be susceptible to torsion.