Topic: Scientific Method1) The process of gathering information through

the senses is called __________. a) analyzing c) a hypothesis b) hypothesizing d) observation 2) The ___________ is a way to ask and answer

scientific questions by making observations and doing experiments.

a) observation c) conclusion b) design d) scientific method

Topic Scientific Method (Inferences)

Look at the picture,And answer the following:1) Which statement is NOT

an observation:a) The baby has a blue

shirt.b) The baby is sitting.c) The baby wants a milk

bottle.d) The baby has two

hands.

Scientific Method

Drinking water from River

1) Make 2 Observations

a)_____________

b) _____________

2) Make 1 Inference

I think: _______________

Because _____________

3) Write a research question

4) Write a testable question

Topic: Scientific MethodInstructions: Choose the question that goes BEST with the

scientific problem to perform an experiment:

Problem: A student wants to know the rate at which a wax candle burns.

a) Which type of material makes a candle burn faster?

b) How fast does a wax candle burn?c) How does water affect the rate at which a wax

candle burns?d) How do candles work?

Scientific Method

1) Which one is the correct sequence of the first three steps to the scientific method:

a) State the Problem, Hypothesis, Research the Problem

b) State the Problem, Research the Problem, Hypothesis

2) What is a hypothesis?

a) Testable guess

b) Quantitative observation

Scientific Method

1) How many independent

variables should a scientist

work with in a controlled

experiment?

a) As many as the investigator can handle

b) One

c) A maximum of three

2) The dependent variable

is the thing that I can _____

in an experiment.

a) Manipulate

b) Change

c) Measure

Scientific Method (Variables)

Instructions: Read and Write the following in your composition

notebook and identify the different variables.

Independent Variable

Dependent Variable Constant

Mrs. Mello wanted to see how different types of music affected students’ pulse rates. She played different types of music: rock, rap, R&B, alternative, pop, country, and classical music.

Chapter 1- Classification Notes

I. Living Things A. How are living things or organisms alike?1. Living things are organized

a. cell- smallest unit that carries the function of lifeb. each cell has a structure and contains heredity

material (DNA)

2. Living things respond.a. stimulus-anything that causes some change in an

organism.b. response- the way an organisms reacts to a stimulus,

results in movementc. homeostasis- maintaining proper conditions within an

organism

3. Living things use energy4. Living things grow and develop.

a. growth in many-cells is due to an increase in the number of cells.

b. growth in a single cell is due to an increase in the size of the cell.

c. development: changes that take place over a life span of an organism.

5. ReproduceB. What do living things need?1. A place to live2. Raw materials (water, proteins, fats, & sugar)

Two Types of Cells

•Prokaryotic

•Eukaryotic

Prokaryotic

• Do not have structures surrounded by membranes

• Few internal structures

• One-celled organisms, Bacteria

Eukaryotic• Contain organelles surrounded by membranes• Most living organisms (protists, fungi, plants,

animals)

PlantAnimal

Cell Theory

• All living things are made up of cells.

• Cells are the smallest working units of all living things.

• All cells come from preexisting cells through cell division.

Life Cycle

1) Organism Formation

2) Growth and Development

3) Death

Cell Cycle

I. Interphase

II. Mitosis

III. Cytokinesis

I. Interphase

• The cell’s chromosomes duplicate.

• The nucleolus is clearly visible in the nucleus.

• Preparation for cell division

II. Mitosis

A)Prophase

B)Metaphase

C)Anaphase

D)Telophase

A) Prophase

• The pair of chromatids are visible under a microscope

• The nucleolus and the nuclear membrane disintegrate.

• The centrioles move to the opposite.

• Spindle Fiber appear.

B) Metaphase

• The pair of chromatids line up across the center of the cell.

• The centromere of each pair usually becomes attached to two spindle fibers.

C) Anaphase

• Each centromere divides and the spindle fibers shorten

• Chromatids separate.• Each chromatid

begins to move• The separated

chromatids are now called chromosomes

D) Telophase

• Spindle fibers start to disappear.

• Chromosomes start to uncoil.

• A new nucleus forms.

Cytokinesis

• Cytoplasm separates• Two new cells are

formed.