Scientific Investigations
What variable is the variable that is measured in an investigation?
Dependent Variable
To describe an object's motion, you should use it's ___________ and ____________.
direction and speed
What is a producer?
a plant (makes its own food)
What do you call a circuit with only one path for the electric current?
series circuit
Draw the particles in each state of matter.
Solid- close together
Liquid- some space between, sliding past each other
Gas- lots of space, moving around quickly
Identify the following statement as an inference or an observation. Explain.
The tree smells like cedar and pine.
Observation because you would have to use your sense of smell to make this observation.
What kind of energy do all moving objects have?
Kinetic Energy
What is the difference between structural and behavioral adaptations?
Structural adaptations are parts of the animals body that help them survive.
Behavioral adaptations are things the animals DO that help them survive.
Draw a parallel circuit.
Should include a battery, wires, and bulbs.
Must have 2 or more paths for the electric current.
DAILY DOUBLE!!!!
What is the difference between an element, and a compound?
An element is in its simplest form and cannot be broken down into other substances. Compounds are made of two or more elements.
A student is investigating the time it takes four objects to reach the ground after they are dropped. The independent variable in this investigation is the ___________?
objects
__________ is the resistance to motion by two objects moving against each other.
Friction
Give 2 examples of structural adaptations, and 2 examples of behavioral adaptations.
Structural- sharp claws, webbed feet, waterproof feathers, camouflage, bright coloring, etc.
Behavioral: hibernation, migration, singing a mating song, shooting out quills, playing dead, etc.
Draw a magnetic field.
should have a rectangle magnet in the middle with lines connecting the north and south poles
Give one example of an element and one example of a compound.
elements: silver, gold, oxygen, nitrogen, potassium, lead, chlorine, sodium, helium, etc.
compounds: sugar, salt, carbon dioxide, water, etc.
A student observes a rock. The students writes down 3 observations about the rock:
-Weighs 20 grams
-About 4cm
-Hardness = 6
What type of observations are these?
Quantitative Observations
When a coin is dropped, it falls to the ground. As the coin falls, it loses potential energy and gains what kind of energy?
Kinetic Energy
DAILY DOUBLE!!!!!!!
Name the 5 types of animals that are VERTEBRATES.
Birds
Fish
Amphibians
Reptiles
Mammals
What is the difference between a conductor and an insulator. Give an example of each.
Conductor- allows the flow of electric current
examples: metal, foil, water, human body
Insulators: don't allow flow of electric current
examples: paper, wood, rubber, plastic, glass
How are mixtures and solutions different? Give an example of each.
Mixtures have 2 or more substances combined. They can be easily separated, and often have chunks. You can see the different parts.
Examples: chex mix, salad, trail mix, fruit salad, etc.
Solutions have 2 or more substances, but one is dissolved in the other. You cannot see the parts, and they are difficult to separate.
Examples: lemonade, tea, salt water, etc.
A student designed an investigation to test the effect of light color on plant growth. What was the dependent variable in the investigation?
Growth of the Plant
A person pushes a box as shown. What is the push most likely to change? The size, mass, matter, or position?
Position
Draw a food web with 5 organisms. Label each as consumer, producer, or decomposer.
Answers will vary.
How do you make an electromagnet, and what makes it stronger?
Wrap coils of wire around an iron nail, and make a circuit with a battery.
To make it stronger, add more coils to the wire.
Draw models of each of the following:
-1 atom of gold
-1 molecule of oxygen
-1 water compound
-atom should be one circle
-molecule should be two circles bonded together, same color
-the water compound should have 3 circles bonded together, 2 of one color, and 1 of a different color