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. left-handness in a person
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
The part of the Earth is divided into plates?
A. Inner Core
B. Outer Core
C. Mantle
D. Crust
What is the crust.
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 horse has a bump on its leg where the leg was broken. What is this an example of?
A. recessive genes
B. dominant genes
C. acquired physical trait
D. inherited physical trait
What is C. acquired physical trait
How does a hot spot form a chain of volcanoes?
A. Volcanoes form above a hot spot. The volcanic mountains move as the plate moves.
B. The hot spot allows magma to ooze from a vent.
C. The hot spot allows magma to explode from a vent.
D. The hot spot forms alternating layers of lava and ash.
What is A. Volcanoes form above a hot spot. The volcanic mountains move as the plate moves.
A student measures the mass of a whole orange. He cuts up the orange and measures the mass again. What is TRUE about the orange's mass before and after it was cut up?
A. It was greater when it was whole.
B. It is greater in pieces.
C. It is the same whole or cut up.
D. It is less when it is a whole.
What is C. It is the same whole or cut up.
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
Which characteristic is shared by a goldfish, a parrot, and a snake?
A. They all have feathers
B. They all have a backbone
C. They all breathe with lungs
D. They all have constant body temperatures
What is B. They all have a backbone
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 more shallow.
What is D. The river becomes more shallow.
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
Which statement about bacteria is true?
A. Bacteria only live on land
B. Bacteria make their own food
C. People use bacteria to make certain foods
D. All bacteria are beneficial microorganisms
What is C. People use bacteria to make certain foods
What is weathering?
A. a force that pulls pieces of rock downhill
B. a process that builds up features on Earth's surface
C. the picking up and moving of rock pieces from one place to another
D. the breaking down of rock into smaller pieces at or near Earth's surface
What is D. the breaking down of rock into smaller pieces at or near Earth's surface