Nature of Science
The variable that is changed by the scientist
Independent Variable
This type of change allows a substance to change from one form to another without changing its chemical properties.
physical change
This form of energy tells you how hot or cold an object is
Thermal (heat) energy
What is the name of the galaxy we live in?
Milky Way
What are the 3 types of rocks?
metamorphic, sedimentary and igneous.
Scientists copying an experiment that was done to ensure the conclusions are valid.
Replication
This type of change allows a substance to be changed into a new substance with different properties
Chemical change
This form of energy comes from the movement of charged particles
Electrical Energy
Name the 4 inner planets
Mercury, Venus, Earth and Mars
This type of rock is formed from cooled magma or lava
Igneous
Scientists repeat their test as many times as possible so they can get the most accurate info.
Repetition
True or false: To speed up the dissolving rate process you can
decrease the temperature
stir the mixture
increase the surface area (smaller particles)
False:
To speed up the process you can:
increase the temperature
stir the mixture
increase the surface area (smaller particles)
This type of energy is the energy an object has due to its motion or position.
Mechanical
This is responsible for appearance of day and night and the apparent movement of the Sun, Moon, and stars from west to east.
It takes the Earth 24 hours to do this.
Rotation
This type of rock is formed from extreme heat and pressure
Metamorphic
An explanation based on evidence that is not directly observed.
Scientists use reasoning to draw conclusions from your observations
Inference
True or false: burning, cooking, rusting, and decaying (rotting) are types of physical changes.
False
These are chemical changes
This type of energy is stored in matter and can be released by a chemical reaction
Chemical energy
The movement of one object around another
It takes Earth 365 days or 1 year to do this
Revolution
This type of rock is formed from layers of eroded rock, fossils and minerals.
Sedimentary
a personal belief or judgement that does not need to be backed up by evidence
Opinion
Which of these conditions has the greatest effect on how quickly a substance changes from one state to another?
a. color
b. light
c. shape
d. temperature
D. Temperature
This form of energy creates sound waves as they travel.
Sound energy
What are the 4 main phases of the moon?
first quarter, new moon, third quarter and full moon.
True of False: Minerals are identified by the following properties: color, cleavage, hardness, luster, and streak.
True