| A | B |
|---|
| observations | using the five senses & simple instruments |
| prediction | statement of what you think will happen in the future |
| hypothesis | a statement of what you think will happen if certain event(s) occur |
| data | information collected in an experiment |
| length, mass, & volume | measured using standard & nonstandard units |
| standard units | include centimeters, grams, & liters |
| nonstandard units | hand length, number of papers clips etc. |
| length | measured in centimeters & meters or inches, feets, yards |
| temperature | measured in dgrees celsius or degrees fahrenheit |
| time | measured in hours, minutes, & seconds |
| property attribute | is a characteristic that describes an object (color, shapes, & sizes) |
| matter | material that makes up all objects, such as wood, water, & oxygen |
| the 3 states of matter are | solid, liquid, and gas |
| mass | amount of matter in an object. Measured in kilograms or ounces & pounds |
| volume | amount of space of a liquid, solid, or gas it takes up (measured in millimeters & liters or pints) |
| an atom is | the smallest unit of matter |
| when an atom is moving fast | it can make a piece of matter get a bit larger or expand |
| matter can | contract (or become smaller) due to changes in temperature |
| evaporation | is when water changes to gas |
| condense | is when heat is taken away from gas or changes from gas to liquid |
| melting | when a solid is heated enough to turn into a liquid |
