First Quarter
Many people use the word theory to mean a guess or an idea. What do scientists mean when they use the word theory?
a. a possible explanation to a scientific question.
b. an explanation that has a great deal of evidence to support it
c. one of several possible ideas a scientist has about what causes a natural event to occur
d. a hypothesis that has been supported by at least one experiment
b. an explanation that has a great deal of evidence to support it
When are scientific models used?
When objects are too big or too small to be seen.
What are the two ways that rocks are broken down into smaller pieces?
A. abrasion and erosion
B. deposition and erosion
C. physical weathering and deposition
D. chemical weathering and physical weathering
D. chemical weathering and physical weathering
If a balanced force acts on a toy car sitting motionless at the top of a ramp, what will the car do?
A. It will stay in place.
B. It will roll backward.
C. It will fall off the ramp.
D. It will roll down the ramp.
A. It will stay in place.
Jennifer wants to determine if plants will grow more under different color light. What will be the test (independent) variable?
The color of the light, because that is the variable you will change.
The Sun's heat and light travel to Earth in the form of ultraviolet (UV) rays. Which type of heat transfer is this an example of?
A. conduction
B. convection
C. radiation
D. reflection
C. radiation
Which type of force could be used to pull upon a metal paper clip with out touching it.
A. elastic force
B. force of friction
C. magnetic force
D. force of gravity
C. magnetic force
All scientific names are part of a binomial nomenclature.
Which of the following is an example of a scientific name
A. heliconia fructis, red cone flower
B. Cardioderma cor
C. Heart-nosed bat
D. Annelida rotifera neurosima duciana
B. Cardioderma cor
A current report on the internet is predicting that it will be sunny in tampa, Florida, tomorrow. What is the report predicting?
A. Climate
B. Season
C. Temperature
D. Weather
D. Weather
How is a scientific experiment different from other types of scientific investigations?
A. A scientific experiment never uses the scientific tools.
B. A scientific experiment always involves the use of models.
C. A scientific experiment uses procedures in a random order.
D. A scientific experiment tests a hypothesis under controlled conditions.
D. A scientific experiment tests a hypothesis under controlled conditions.
Which of these is an example of the climate of Florida?
A. storms during a hurricane
B. a day when it is easy to get a sunburn
C. warm, sunny weather most of the year
D. twelve rainy afternoons during the month of August
C. warm, sunny weather most of the year
Which statement is NOT part of the cell theory?
A. All cells have a nucleus.
B. Cells are the basic unit of life.
C. Cells come only from other living cells.
D. Every living thing is made of one or more cells.
A. All cells have a nucleus.
Scientists most likely use classification systems to separate organisms into groups based on similarities or differences in their characteristics because these systems
A. allow scientists to easily identify different kinds of organisms.
B. allow scientists to change the name of an organism any time they want.
C. make it impossible to identify what kind of organism a scientist is studying.
D. make the study of different kinds of organisms very confusing.
A. allow scientists to easily identify different kinds of organisms.
In ancient civilization of people once thought the earth was flat. Later evidence showed the earth is a sperical shape. What did this new evidence show?
A. Scientific knowledge is constantly changing.
B. Some scientific theories are not well understood.
C. Many scientific theories are proposed without proper evidence.
D. Scientific knowledge is not usually reliable because the evidence is old.
A. Scientific knowledge is constantly changing.
Zac noticed that it rained a lot in Florida during the summer. He wondered if the increase in temperature affected the amount of rainfall. He collected data at the same time each day and averaged the data for each month. What is a constant variable in Zac's investigations?
A. the amount of rainfall
B. the change in temperature
C. the number of days in each month
D. the time of day the data was collected
D. the time of day the data was collected
What is the main energy source for wind?
A. the sun
B. the water cycle
C. ocean surface currents D. the curvature of the Earth
A. the sun
How can an object be changed in order to increase its kinetic energy?
A. by decreasing its mass
B. by rolling it down a ramp
C. by placing it on a lower surface
D. by increasing amount of friction
B. by rolling it down a ramp
Kendra is studying a unicellular organism that lacks a nucleus. To which kingdom does this organism most likely belong.
A. Kingdom Eubacteria
B. Kingdom prtistan
C. Kingdom Plantae
D. Kingdom Fungi
A. kingdom Eubacteria
Nina wants to investigate how an object's mass affects the average speed at which it travels when dropped, until it hits the ground. Which variable must Nina change during the experiment?
A. the timer
B. the drop height
C. the mass of the object
D. the place where she drops it
C. the mass of the object
Sometimes, in Florida, fires burn large areas of forests, which are part of the biosphere. Other than the biosphere, which of Earth's other spheres would the forest fire immediately affect if there were no water nearby?
What is atmosphere?
Which of the following describes the part the Sun plays on a windy day at the beach?
A. The Sun stops the wind throughout the afternoon as everything warms up.
B. The Sun causes waves to be larger by directing solar energy into the water.
C. The Sun heats land quickly and as the warm air rises, cool air comes in from the water.
D. The Sun reflects off the water, making the air above the water unstable and more likely to move.
C. The Sun heats land quickly and as the warm air rises, cool air comes in from the water.
The Sun and Earth each have a gravitational pull on each other. How would that gravitational force be affected if Earth were much farther from the Sun?
A. The gravitational force would increase.
B. The gravitational force would decrease.
C. The gravitational force would be unchanged.
D. The gravitational force would cause higher tides.
B. The gravitational force would decrease.
There are millions of different species of animals, plants, and microorganisms. Which of the following factors do biologists consider to be the most imoportant
A. General appearance
B. details of external, internal body structures
C. inherited and acquired behaviors
D.environmental conditions of the organism’s habitats.
B. details of internal and external body structures
Which of these describes one of the functions of the nervous system?
A. sensing changes in the external environment
B. providing the cells of the body with energy
C. removing waste materials from the body.
D. transporting nutrients throughout the body
A. sensing changes in the external environment