 A __________ of some aspect of the environment by using one of the _________ or an ___________.  Ex. The pencil is yellow. perception 5 senses instrument

 5 Senses ◦, hearing, touch, taste,. Qualitative Observation Sight smell

An is a device that extends the beyond their normal limits. Makes observations more accurate Ex. Ruler, thermometer, etc. Quantitative Observation instrument senses

 An interpretation of an observation.  In science this is sometimes called a _____________.  Ex. The frog is going to eat the crickets. hypothesis

 Placed around the room are 7 objects.  On the chart in your notes you need to complete the following information for each item: Object # 3 observations One inference Observation and Inference Exercise

 A time machine has been invented that travels into the past and takes pictures, sending them to the present. You are asked to look at one of the pictures and interpret what you see.  Put an “O” before the statements that are observations and an “I” before the statements that are inferences. Dinosaur O and I

 In order to make observations, an observer must always use ◦ 1. experiments ◦ 2. proportions ◦ 3. the senses ◦ 4. mathematical calculation  Correct Answer: 3. the senses

 Using a ruler to measure the length of a stick is an example of ◦ 1. extending the sense of sight by using an instrument ◦ 2. calculating the percent of error by using a proportion ◦ 3. measuring the rate of change of the stick by making inferences ◦ 4. predicting the length of the stick by guessing  Correct Answer: 1. extending the sense of sight by using an instrument

 Which statement about a mineral sample found in a field in New York State is most likely an inference? ◦ 1. The sample is white in color. ◦ 2. The sample was transported by a glacier ◦ 3. The sample is rectangular, with sharp, angular corners. ◦ 4. The sample is 8 cm long, 5 cm wide, and 3 cm high.  Correct Answer: 2. The sample was transported by a glacier