Matter
Is salt water more or less dense than pure water, and why?
More dense, because there is salt dissolved into the water.
What does N stand for when looking at force?
Newtons
What celestial body is mostly responsible for Earth's daily tides?
The moon! (We love Luna)
Mechanical and kinetic energy are just fancy ways of naming what kind of energy?
Movement energy!
What are the layers of Earth in order from lease dense to most dense?
Crust
Mantle
Outer core
Inner core
Water has a density of 1.0g/cm3. What would something with a density of 1.2g/cm3 do when placed in water?
Sink
What force pulls everything on our planet to towards the center of the Earth?
Gravity
What is the Earth's revolution?
The orbit of the Earth around the sun.
What type of energy does a battery have?
Chemical potential energy
What is the crust and mantle made up of?
Rock!
What are 2 of the most common properties of metal?
-High luster (shiny)
-Malleable or ductile
-Good conductor
What is the difference between weight and mass?
Gravity changes weight.
Gravity does not change mass.
What is the Earth's rotation What does this rotation cause?
The spinning of the planet around it's own axis.
Day and night.
What kind of energy does an apple sitting on a table have?
-Gravitational potential energy
-Chemical potential energy.
What is the asthenosphere?
The liquid part of the mantle.
What are 2 of the most common properties of nonmetals?
-Dull
-Brittle
-Not conductive (Good insulator)
Two people push a couch to the left. One pushes with 40 N of force, and the other pushes with 20 N of force, what is the net force exerted on the couch, and what direction is it moving?
40N left
+20N left
____
60N to the left.
When it's summer in Texas in the northern hemisphere, what would the season be in Australia, in the southern hemisphere?
Winter.
A rubber band is stretched, and then released.
What is the energy of the rubber band like during the stretch and after the release?
During: Elastic potential energy
After: Kinetic energy as it flies through the air.
What must happen for a rock to become a metamorphic rock?
Heat and pressure (without melting!)
Mass is how much matter is in an object. What is volume?
How much space that object takes up.
If a box is pushed from the right with 20 N of force, but friction pushes back on the box with 20 N of force to the left, what is the net total force of the box, and what is the direction?
20N right
- 20N left
______
0N
No movement would mean no direction.
The sun, earth, and moon make a straight line. What kind of tide does this make?
A spring tide.
A cart on a roller coaster speeds up as it approaches the bottom of the first hill of the coaster. Which statement best describes the energy of the cart at this point in the ride?
The cart is gaining kinetic energy and losing gravitational potential energy.
Which rocks can become igneous rocks?
All! If any rock melts and cools it becomes igneous!