Energy
What causes a person to see their reflection in a mirror?
Light rays are reflected by the mirror.
For electric current to flow through a circuit, the loop must be________.
Closed.
What is force?
A push or a pull on an object that causes a change in its motion.
What object can be used to separate metal in a mixture?
A Magnet
How is water added to the ocean in the water cycle?
Precipitation and runoff
What kind of energy is obtained from eating an apple?
Chemical Energy
Most of the electrical energy in the United States uses nonrenewable sources. It is important to conserve these energy sources because the supply is limited. What is a non renewable source of energy?
Coal
When an object is not moving the force is_________.
Balanced.
What are the 3 states of matter?
Solid, liquid, gas
What factor effects the speed of evaporation? Explain
Temperature.
The hotter it is the faster evaporation occurs.
The colder it is the slower evaporation occurs.
What type of energy is stored in batteries?
Chemical Energy
What are you doing when you turn on a light using a switch?
Closing the electrical circuit causing electricity to flow.
A force acting on the earth equally in all directions pulling everything towards the earths core is called what?
Gravity
Name an example of a chemical change in matter.
Answers Vary
baking a cake, rusty nail...
This climate zone is hot and humid. What is it?
Tropical
An object has a type of energy due to the movement of electrons. Which type of energy is this?
Electrical Energy
What is electromagnetism?
The force produced by an interaction between electricity and magnets.
What is friction?
The force that opposes the motion of a solid object over another.
The effect of items sticking together due to rubbing against each other.
A _______ expands to fill the container it is in, while a _______ takes the shape of its container.
Gas
Liquid
Name and explain the 3 main stages of the water cycle.
Evaporation- water changes from a liquid to a gas due to heat
Condensation- The gas cools and condenses forming clouds and liquid.
Precipitation- Water falls from the clouds down as rain, hail, sleet and/or snow.
What type of energy travels as a wave through matter that causes particles to vibrate in the same direction that the wave travels?
Sound Energy
What is the difference between an insulator and a conductor?
Insulators are material electricity does not easily flow through, such as rubber.
Conductors are materials electricity easily flows through such as copper.
How quickly or how far an object moves is based on the________ of the object and the strength of the ______ applied to the object.
Mass
Force
What is the difference between a physical change and a chemical change in matter?
A physical change is able to be changed back, such as water evaporating, the gas can be cooled and turned back into water.
A chemical change cannot be changed back. When you bake a cake, you cannot undo the process of baking to go back to a batter.
What is the difference between weather and climate?
Weather changes constantly in the atmosphere minute by minute.
Climate is what the weather is like over a long period of time in a specific area.