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. left-handedness in a person B. a raccoon 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
At the beach, John noticed that much of the sand had been eroded by the wind.
One way to decrease the amount of erosion on this beach would be to
D
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.
A jetty is a structure that A. holds back floodwater that would otherwise flow downstream. B. provides homes for fish and other organisms that live in the ocean. C. traps sand and small rocks in order to protect the beach. D. keeps rising flood waters within stream channels.
What is C. traps sand and small rocks in order to protect the beach.
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. 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 nor 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.
A geographic information system (GIS) is used to collect, analyze, and store large amounts of useful data. For example, a GIS can store data about the height of different points on the ground. Using a GIS, scientists can create flood forecast maps that predict how likely an area is to flood because of a storm.
Without GIS data, flood forecast maps can only predict flooding at a few places along a waterway. But, GIS data gives scientists information about many data points. So, flood forecast maps made with GIS data can be used to predict flooding for an entire region, not just at certain places along a waterway.
Why is it important for flood forecast maps to be able to be used to predict flooding in an entire region?
B
When solid baking soda mixes with liquid vinegar, the mixture starts to bubble and spatter. The bubbles show that the mixture creates a new material, which is a gas.
What is true about the new material?
C
Sea grass has begun to grow on a sand dune. How is the sea grass MOST likely to affect the sand dune? A.) The dune will move toward the land. B.) The dune will move toward the ocean. C.) The dune will erode more slowly and may even grow. D.) The dune will erode more quickly.
What is C.) The dune will erode more slowly and may even grow.
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
Clive is an architect and is designing a new elementary school. He is considering ways to design the building to reduce the effects of future tornadoes.
Which of the following is a design feature that could help Clive achieve this goal?
C
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
Tracy has a kind of dog known as a boxer. Her boxer has brown and white fur, brown eyes, and a docked tail.
Which characteristic of Tracy's boxer is acquired?
A
A seismological study finds that there will likely be a large increase in the number of earthquakes occurring in a certain area.
What action would most likely be taken to control the damage that could occur?
D