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Science Finals
| Question | Answer |
|---|---|
| Changes are occurring all around you and every change requires ___. | Energy |
| The ___ an object is moving the more kinetic energy it has. | Faster |
| A roller coaster at the top of the hill has ___ potential energy and ___ kinetic energy. | High & Low |
| Springs and rubber bands both have ___ potential energy. | Elastic |
| As a car moves, its engine changes the chemical energy of fuel into ___ energy. | Mechanical |
| Friction creates heat and lowers the ___ of machines. | Efficiency |
| Waves are disturbances that transfer ___ from one point to another. | Energy |
| The highness or lowness, or the ___ of a sound depends on the frequency of the sound waves. | Pitch |
| The motion of two or more waves passing through the same medium at the same time is called ___. | Interference |
| Light travels in a straight line called a ___. | Ray |
| Light waves can travel through empty space without needing a solid, liquid, or gas ___. | Medium |
| Some rays of light pass through a ___ object, and some light rays are blocked or bent in different directions. | Translucent |
| Concave mirrors curve inward, convex mirrors curve outward, and ___ mirrors are flat. | Plane |
| A ___ telescope uses two convex lenses to form an image while a ___ telescope uses a concave mirror to form an image. | Refracting & Reflecting |
| A wave that can travel through matter or through empty space is called an ___ wave. | Electromagnetic |
| The electromagnetic waves in the electromagnetic spectrum have different amounts of energy are ___. | Speed of light |
| The light that is reflected by an object determines the ___ of the object. | Color |
| Heat is a form of ___ energy caused by the movement of molecules that make up all matter. | Kinetic |
| Heat energy can move in three ways: ___, ___, and ___. | Conduction, Convection, & Radiation |
| Conduction is the only way that thermal energy can travel through ___. | Solids |
| Atoms are made of ___, ___, and ___. | Protons, Neutrons, & Electrons |
| Grounding provides a safe path for ___ to follow. | Lightning |
| A child walks down a carpeted hall and touches her brother. She is surprised that he felt a shock. What might have happened? | The child's shoes against the carpet generates static electricity which goes to the child to her brother. |
| According to its scientific definition, work occurs when a ___ makes an object move. | Force |
| The force you use when you use a machine is called the ___ force, or the effort force. | Input |
| An example of a simple machine that has no moving parts and can be used to remove the lid from a paint can is a ___. | Screw |
| Simple machines make it easier to do work by changing either the ___ needed to do the work or the ___ through which the force is applied. | Force & Distance |
| The part of the bar where the effort force is applied is called the ___ arm. | Effort |
| A wheel and axle is a type of ___ lever. | First-class |
| Do simple machines reduce the amount of work we do? Explain. | No. We do the same amount of work because simple machines only make it easier to do, not reduce the amount of work. |
| Coal is burned to boil water. The steam turns a turbine connected to a generator. As the generator spins within a ___ field, electricity is produced. | Magnetic |
| In a hydroelectric power plant, ___ water spins a turbine. | Flowing |
| Wind turbines convert the energy of the wind into ___. | Electricity |
| Which alternative energy source would be the best for residence in Louisiana? Explain the reason for your selection. | Hydroelectricity because there are a lot of lakes in Louisiana and it rains a lot. |
Created by:
Floofi
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