Force & Motion
If I rolled a ball across all of the surfaces below, which would have the most friction?
carpet, smooth tile, cement sidewalk, plastic
Carpet
Wrapping a wire around an iron nail and creating a closed circuit produces a _____.
An electromagnet
Sound is a form of _________ energy.
Mechanical
What are the three states of matter?
Solid, liquid, gas
What are the 3 types of rocks?
Igneous, sedimentary, metamorphic
If I rolled a ball across all of the surfaces below, which would have the least friction?
carpet, smooth tile, cement sidewalk, plastic
smooth tile
What is the source of energy within a circut?
A battery
What does sound travel fastest through? Why?
Solids - the molecules are closer together
1. A _____ is a combination of two or more substances that do not lose their identifying characteristics when combined. (Ex. mixed fruit)
Mixture
Name the four layers of the Earth from the outside to the inside.
1. Crust
2. Mantle
3. Outer core
4. Inner core
Ayanna conducted an experiment to measure the distance a marble would travel across different surfaces. What is the independent variable in Ayanna's experiment?
The type of surface
If you rub a balloon on your hair, what causes your hair to stick to the balloon?
Static electricity
________ is when a light wave is bent resulting from a change in velocity as it moves from one area to another (air to water).
Refraction
If I have a cup of ice that has a mass of 100g what would the mass be once the ice melts?
100g
What are the 3 different ways the Earth's plates can move? Describe them.
Convergent: move towards each other
Divergent: move away from each other
Transform: plates slip past each other horizontally
A student rolls a soccer ball on the ground. Which of these causes the soccer ball to slow down and then stop?
Friction from the ground
An insulator is a material that _____. (And give an example)
Blocks the flow of electrons
(plastic, rubber, fabric. etc.)
1. What color in the rainbow has the lowest frequency?
2. What color has the highest frequency?
1. Red
2. Violet/purple
A ______ is a special type of mixture in which one substance dissolves in another. (Ex. kool-aid mix in water)
Solution
_____ is the carrying away of the rocks and materials by either wind or water.
Erosion
Which ball needs more energy to move the same distance? Why?
bowling ball, golf ball, soccer ball
Bowling ball because it has more mass
Give me 3 metals that are good conductors.
Iron, copper, steel
What is shown using compression waves?
Sound
The smallest particle of matter is an ______.
Atom
How are igneous rocks formed?
How are sedimentary rocks formed?
How are metamorphic rocks formed?
Igneous: magma/lava
Sedimentary: cemented sediments
Metamorphic: heat and pressure