Energy
List the 6 types of Energy
Electrical, Sound, Mechanical, Light, Thermal, Chemical
What are the 3 states of matter?
Solid, Liquid, Gas
Below is a list of substances. Which of the substances will dissolve in water?
Sand, Salt, Drink Mix, Rocks, Noodles, Hot Cocoa Mix
Salt, Drink Mix, Hot Cocoa Mix
Force is the ability to change an objects speed or ____________.
Direction
A hairdryer is plugged into a wall. The electrical energy is transferred into what other 2 types of energy?
An egg is cooking. What kind of change is occuring?
Chemical Change
If you have a mixture of iron shavings and sand. What tool would best separate the mixture?
Magnet
A teacher lets go of a ball. It falls to the ground. What force causes the ball to fall to the ground?
Gravity
A circuit has a light bulb, battery, and wires. When the circuit is closed, it produces what kind of energy?
Light Energy
Jeff is playing a harp. There are short and long strings on it. Which would cause a higher pitch sound, the shorter or longer strings?
Shortest String
Ms. Rose pours the same amount of an unknown substance into the three containers. The substance sits at the bottom and spreads out to take the shape of each container.
What state of matter is the unknown liquid?
It is a liquid
Which of the following mixtures would you separate with a filter?
a. Soda
b. Fruit Juice
c. Salt Water
d. Sandy Water
d. Sandy Water
Increase the force
Gina rubbed a balloon against her hair and held the balloon a few inches away from her head. The balloon then pulls her hair towards in when it is near her. Which statement best describes the balloon shown here?
a. it is magnetic
b. there is friction
c. it has an electrical charge
d. her hair is not effected by gravity
c. it has an electrical charge
In a wind turbine, the wind causes the blades to move. This then transforms into what kind of energy?
Electrical Energy
A bowl sits outside for 3 days. Each day there is less water. What is happening to the water?
It is evaporating
What are 2 things that can cause a 2 parts of a solution to mix faster?
Heat and Agitation (stirring)
Acceleration in matter is any change in speed or change in direction. Which does NOT describe acceleration?
A. A car slows down at a red light and prepares to stop.A car slows down at a red light and prepares to stop.
B. A boy sets a ball on the table and plans to play with it later. A boy sets a ball on the table and plans to play with it later.
C. A bike makes a right turn at a corner.A bike makes a right turn at a corner.
D. A runner speeds up and passes the person ahead of him.
B. A boy sets a ball on the table and plans to play with it later. A boy sets a ball on the table and plans to play with it later.
Pencil Lead, Lemon Juice, Aluminum, Air, Glass, Plastic, Wood
Aluminum, Pencil Lead, Lemon Juice
When you look at a body of water and see an image of the landscape, what is happening to the light to cause that phenomenon?
What is the temperature in Fahrenheit that water freezes and boils?
Boils: 212
A student made a mixture using equal amounts of sand and sugar. The sand grains are similar in size to the sugar crystals. What should the student do to most easily separate the sand from the sugar?
Mix it in water to dissolve the sugar and filter the sand out.
Explain the difference between balanced and unbalanced forces.
Balanced forces are equal and do not cause motion while unbalanced forces are not equal and cause motion.
What causes 2 items to be attracted to each other if they have electrical charges?
They have opposite charges