Life Science
When a fox builds a den, it is demonstrating
A. instinct
B. dominant traits
C. a physical trait
D. environmental influences
What is A. instinct
Which of the following is true of mountains?
A. They are built up by waves
B. They are built up by water carrying sediment away
C. They are built up when plates push together
D. They are made by rivers cutting through land
What is C. They are built up when plates push together
Copper is to conductor as
A. a magnet is to an electromagnet
B. charge is to static electricity
C. switch is to circuit
D. plastic is to insulator
What is D. plastic is to insulator
Which is an example of a learned behavior?
A. a person blinking
B. a racoon eating trash
C. an opossum lying still when it feels threatened
D. an arctic fox turning white in the winter
What is B. a racoon eating trash
From what structure do vertebrates get their name?
A. skull
B. backbone
C. number of legs
D. ribs
What is B. backbone
Which of the following is found in plant cells but not in animal cells?
A. cell membrane
B. chloroplast
C. nucleus
D. mitochondria
What is B. chloroplast
Which of these land forms were LEAST affected by erosion?
A. river
B. plain
C. canyon
D. sand pit
What is B. plain
Two balloons move closer when they are placed close together. What is the BEST explanation?
A. They have mixed charges
B. They have the same charge
C. They have opposite charges
D. They are uncharged.
What is C. They have opposite charges
Which of the following BEST describes an instinct?
A. Learning how to hunt
B. All the things that surround an organism
C. A behavior that an organism inherits
D. Duplication of an organism's cells
What is C. A behavior that an organism inherits
Which landform is carved by running water?
A. sand dune
B. canyon
C. mountain
D. hill
What is B. canyon
Which of the following is a beneficial microorganism? A. staph bacteria that causes boils
B. mold that produces penicillin
C. algae that causes red tide
D. fungus that causes ringworm
What is B. mold that produces penicillin
Which landform is not built by a constructive force?
A. delta
B. canyon
C. sand dune
D. shield volcano
What is B. canyon
Which of the following types of magnets can be switched off when magnetic attraction is not needed? A. bar magnet
B. magnetic field
C. electromagnet
D. static magnet
What is C. electromagnet
When hydrogen and oxygen react they explode and form water. What kind of change is that?
A. physical
B. chemical
C. both physical and chemical
D. neither physical or chemical
What is B. chemical
What characteristics help scientist classify an organism as an animal?
A. It is made up of many cells and feeds on other living or once living things
B. It is made up of many cells and absorbs food from its surroundings
C. It is made up of one cell and makes its own food
D. It is made up of many cells and makes its own food
What is A. It is made up of many cells and feeds on other living or once living things.
Which is an acquired characteristic?
A. scar
B. long neck
C. eye shape
D. brown hair
What is A. scar
Natural lakes are formed by erosion. ALL BUT one of these is a type of erosion that forms lakes.
A. glaciers
B. gravity
C. rivers
D. wind
What is B. gravity
An example of a chemical change is
A. burning wood
B. breaking a glass
C. folding paper into a frog
D. molding clay into a snake
What is A. burning wood
A solution is a mixture that looks exactly the same everywhere. These mixtures cannot be separated by a filter. Which of these mixtures could use a filter to separate the mixture?
A. A mixture of sand and water
B. A mixture of salt and water
C. A mixture of sugar and water
D. A mixture of juice and water
what is A. A mixture of sand and water
What does an electromagnet have that a bar magnet does not have?
A. electric field
B. coil of wire
C. magnetic poles
D. magnetic field
What is B. coil of wire
A student is observing a group of cells under a microscope. What observation would help her conclude that they are plant cells?
A. The presence of nuclei can be clearly detected within each cell.
B. The cells appear well-defined, indicating the presence of cell walls.
C. The presence of mitochondria can be clearly detected within each cell.
D. The cytoplasm in which the cell organelles are embedded can be clearly seen.
what is B. The cells appear well-defined, indicating the presence of cell walls.
What happens to a river when slow moving water deposits sediment on its bottom?
A. The river changes course
B. The river becomes narrower
C. The river becomes deeper
D. The river becomes shallower
What is D. The river becomes shallower.
As the temperature of water increases from 0 degrees C to 100 degrees C, what changes of state does it pass through - going from coldest to hottest?
A. ice, water vapor, liquid water
B. liquid water, ice, water vapor
C. water vapor, ice, liquid water
D. ice, liquid water, water vapor
What is D. ice, liquid water, water vapor
Your teacher has asked you to complete labeling this plant cell. You know that plant cells have a nucleus. What two organelles should be labeled that WOULD NOT be found in an animal cell?
A. cytoplasm and cell wall
B. membrane and chloroplasts
C. cell wall and chloroplasts
D. cytoplasm and chloroplasts
What is C. cell wall and chloroplasts
A mixture is two or more substances that are mixed together but not chemically combined. The substances in a mixture each keep their own properties and can be separated from the mixture.
Identify the physical properties of matter that might be used to separate two solids from a mixture?
A. size
B. shape
C. magnetic attraction
D. size, shape, and magnetic attraction
What is D. size, shape, and magnetic attraction