Physical Properties
What determines whether an object or a substance floats or sinks?
Density
Is lemonade considered a regular mixture or a special mixture called a solution? Why? (for an extra 100 points)
A solution
What type of energy travels in waves and can be seen easily?
light energy
Reflection is when light ......... another surface
bounces off
Which tool would you use to measure the mass of an object?
Triple beam balance
What happens to salt when you put it in water?
It dissolves
If I have a mixture of holiday nuts: almonds, walnuts, and pecans; why would it be easy to separate the three into three different containers?
They are all solids.
What type of energy does a bicycle use? How? (for an extra 100 points)
Mechanical Energy
When I want to use a magnifying glass to see something bigger, is the light being reflected or refracted?
Refracted
What is needed for a circuit to be complete and closed?
wires, power source (battery), and something to power (light bulb, buzzer, or motor)
Out of this list: salt, sugar, honey, and oil, which one is not soluble in water? why or why not?
Oil, it does not dissolve in water.
A solution is a special kind of mixture. What is one way to separate a solution such as salt and water?
HEAT which then allows the water to evaporate out of the mixture
What kind of circuit is closed with multiple paths of energy to travel?
a parallel circuit
________ surfaces absorb light the most
Dark/ black
If I have I have a parallel circuit with two bulbs and one of the bulbs go out, will the other one go out as well?
No
If I had a ping pong ball, a screw, a cotton ball, and a bead - which one will float on top of water? Is it more or less dense than water?
Ping pong ball, it's less dense
A student made a mixture of same sized salt and pepper grains. How should the student easily separate the pepper from the salt?
A. Use a pair of tweezers to remove the grains of pepper
B. Put the mixture in water and filter the pepper out of the water
C. Run a small magnet through the mixture to attract the pepper.
B. Put the mixture in water and filter the pepper out of the water
When you see windmills on the side of the road, what type of energy is being used to make the windmills sping to then transform into electrical energy?
mechanical
Which of the following always occurs when a light ray reflects off a mirror?
A The speed of the light ray increases.
B The direction of the light ray stays the same.
C The light is absorbed into the mirror.
D The angle at which the light ray strikes the mirror equals the angle at which it reflects.
D The angle at which the light ray strikes the mirror equals the angle at which it reflects.
Which of this is the best conductor of electrical energy?
glass rod, cotton string, plastic tubing, copper penny
copper penny
If I need to remove a hot skillet from the stove, what material would be the best to move it: rubber, plastic, or aluminum? Why?
Rubber because its an insulator
A student combined water and a blue powder paint to create a paint solution. The student left the container in the sun for a few days and observed some changes that occured. What most likely happened to the solution? What evaporated? Was anything left behind?
The water evaporated and left behind a dry blue solid in the container
When electricty flows through a light bulb, it produces two main forms of energy. Which of the following produces the same two forms of energy?
a falling rock, a refrigerator, a roller coaster, or a burning candle
a burning candle - light and thermal energy
A student spilled water on their paper and realized the area where the droplets landed, the writing looked bigger. Why did this happen?
The light was refracted by the water
How can a substance change states of matter? Such as ice changing into water vapor - what is the process?
Add heat to the ice to melt to create a liquid, then add heat to the liquid, to then create water vapor.