Energy & Other
A sponge is placed in a bucket of water and floats. Over time, the sponge begins to sink to the bottom. What is the best explanation for this?
a. The density of the sponge decreases.
b. The volume of the sponge decreases.
c. The density of the sponge increases.
d. The volume of the sponge increases.
c. The density of the sponge increases.
What is kinetic energy?
energy in motion
Energy is the ability to do what?
What is Work?
Does Foam, Aluminum, or plastic have the ability to insulate thermal energy. A hot drink inside a __________ cup stays hot.
a. Foam b. Aluminum c. plastic
a. Foam
What statement best explains the change in appearance of a pencil when it is placed in water?
a. Light is reflected off the pencil surface.
b. Where the pencil and water meet breaks surface tension.
c. The dry part and wet part of the pencil absorb light differently.
d. Light is refracted as it passes through water, glass, and air.
d. Light is refracted as it passes through water, glass, and air.
If a 6th grade student eats a pancake for breakfast and then walks to school. What form of energy was the pancake?
What is chemical
Electrical Energy flows ____________
the battery.
a. through
b. out of
c. into
b. out of
What type of energy does this mainly create ?
a. Thermal Energy b. Light c. Energy of motion
c. Energy of Motion
What type of energy transformation occurs in the following scenario: a dam
What is mechanical to electrical
Picture a Balance... a bear on one side and 5 weights on the other. Based on your observation they appear to be the same weight. The 5 weights are 10g, 5g, 5g, 20g, and 10 g. What is the measurement of the bear?
a. The mass of the bear is 50 pounds (lbs)
b. The volume of the bear is 52 grams.
c. The mass of the bear is 50 grams.
d. The mass of the bear is 52 grams.
c. The mass of the bear is 50 grams.
Define the Law of Conservation of Energy
What is energy cannot be created or destroyed?
What physical property makes a wooden nail, a copper nail, and a steel nail different?
Magnetism
What type of energy transformation occurs in both systems : flash light and electric tooth brush
chemical to electrical energy
If you and a friend are going down two different slides, but the slide your friend is on is 100 ft in the air and the one you are on is 50 feet, which one of you would have more potential energy?
friend/100 ft slide
Electrical energy flows _______ the device (light bulb, buzzer, etc).
a. into
b. out of
c. through
a. into
Gas molecules are...
a. small, fast, and spread apart
b. large, fast, and tightly packed
c. small, slow, and spread apart
d. large, slow, and tightly packed
a. small, fast, and spread apart
Which is an example of refraction?
a. Seeing yourself in the mirror
b. Prism, lens, or hand lens showing enlarged image of letters on newspaper
c. the ripples of water waves bouncing off a barrier
d. the image of a mountain reflected on a still lake
b. Prism, lens, or hand lens showing enlarged image of letters on newspaper
You and your brother are racing a toy car and a toy truck down a ramp at your house. Your brother picks the car because he loves to go fast. You predict that the truck will win down the ramp. Explain why your prediction would be right assuming they are going the same speed and there are no other factors or forces at work?
What is the truck has more mass and therefore more mechanical energy
_______________________ is the ability to do work or cause change
What is energy
What materials are needed to create a complete circuit?
a. battery (source), one wire (electrical energy), aluminum foil
b. two light bulbs (device) , two wires (electrical energy)
c. one light bulb (device), one battery (source), two wires (electrical energy)
d. light bulb (device), one battery (source), one switch
c. one light bulb (device), one battery (source), two wires (electrical energy)