Four solid balls, each with a different
mass, are moving at the same speed. Which
ball would require the
most
force to stop its motion?
A ball with a mass of 5 kg
B ball with a mass of 10 kg
C ball with a mass of 15 kg
D ball with a mass of 20 kg
A girl walked for 30 minutes. She noticed that she traveled farther in the first 15 minutes of her walk than in the second
15 minutes. What can she conclude about
her walk?
A She walked over many hills.
B Her average speed was faster du
ring the first half of her walk.
C She walked in two different directions.
D She was walking at a constant speed.
Which best describes the speed of a ball as it is thrown straight up into the air and comes back down?
A The ball goes up at a constant speed,
stops, then comes down at a constant
speed.
B The ball goes up at a constant speed,
stops, and increases speed as it comes
down.
C The ball goes slower and slower as it
goes up, stops, and then goes faster
and faster as it comes down.
D The ball goes slower and slower as it
goes up, stops, and then comes down
at a constant speed.
What can cause a moving object to increase its speed in a forward direction?
A a force pushing on the object
from the opposite direction
B a force that continually acts on the
object in the direction the object is
moving
C an increase in the mass of the object
D a decrease in the mass of the object
A student uses a rubber band to launch the four objects shown in the table.
Object Mass
paper clip 0.5 gram
piece of paper 1 gram
eraser 2 grams
rubber ball 10 grams
If the student pulls the rubber band
back the same amount each time, which
object will most likely move the fastest
when launched?
In which way are evaporation and condensation similar?
A Both cause decreases in air temperature.
B Both cause increases in air temperature.
C Both are caused by the warming of the atmosphere.
D Both are caused by changes in heat energy.
Which best describes why winds at the beach change direction between day and night?
A because the temperatures over land and over water change
B because warm air over land sinks and stays in place over land
C because cool air rises and is replaced by warm air from the ocean
D because cool air sinks and stays in place over land
Which is the best explanation for how air masses move across the United States?
A The prevailing westerlies move air masses from west to east across the United States but may be deflected by the jet stream.
B The trade winds move air masses from west to east across the United States.
C The jet stream moves air masses from the Pacific Ocean across the United States.
D The warm air of the Gulf Stream
causes air masses to move from the
Atlantic Ocean to the Pacific Ocean.
Which has the greatest effect on wind speed?
a. precipitation
b. cloud cover
c. wind direction
d. air pressure
On a cold, cloudy day, the local weather forecaster predicts that a high-pressure system will be moving into the area in the next 24 hours. Which weather conditions will this system most likely bring to the area?
a. stormy
b. sunny
c. snowy
d. hot
Matt is a tall, eleven-year-old boy. He has a scar on his right cheek. He is intelligent and an excellent drummer. Which of his traits did he most likely inherit?
A his height
B his scar on his right cheek
C his intelligence
D his ability to play the drums
People sitting around a campfire are able to feel the heat from the fire. How are the people able to feel the heat from the fire without touching the fire?
A The heat from the fire travels through the ground and heats the ground
around the people.
B The heat from the fire is conducted through air molecules to the people.
C The heat from the fire rises in the
air and then settles around the people.
D The heat from the fire radiates from the fire to the people.
A litter of kittens have traits that are similar to both the mother cat and the father cat. Which best explains this situation?
A The kittens are provided the same kind
of milk from their mother as they
grow.
B The kittens inherit some of their traits from their mother and some from their father.
C The kittens are kept at the same te
mperatures by their mother when they
are first born.
D The kittens are taught by their parents to have similar traits
Which best explains why children resemble their parents?
A They eat the same foods.
B They have similar DNA.
C They speak the same language.
D They have the same interests.
Bill stands in a swimming pool and notices that the water around his feet is a lot cooler than the water near the surface. Which process causes this difference in temperature?
a. convection
b. evaporation
c. conduction
d. radiation
Which organism is a producer?
a. frog
b. mushroom
c. grass
d. lizard
Which is most responsible for recycling dead plants and animals in an ecosystem?
a. water
b. bacteria
c. fish
d. insects
How would the woodpecker population in a forest area most likely be affected if a housing development is built in that area?
A They would produce more offspring.
B They would change the
color of their feathers.
C They would experience a decrease in available food.
D They would experience a decrease in competition.
In a grassland ecosystem, if the population of eagles suddenly decreased, what will most likely be the effect on the rest of the ecosystem?
A The ecosystem will become overpopulated with snakes.
B There will be a decrease in the population of snakes in the ecosystem.
C The nutrition of the soil in the ecosystem will decrease.
D More types of plants will be
gin growing in the ecosystem.
A simple food chain includes hawks, lizards, and insects. Which will most likely happen to the lizard and hawk populations if a pesticide is sprayed to kill the insects, and the lizard and hawk populations cannot find other food in this ecosystem?
A Both the lizard population and the hawk population will increase.
B Both the lizard population and
the hawk population will decrease.
C The lizard population will increase, but the hawk population will decrease.
D The lizard population will decrease, but the hawk population will increase.
Which is an example of a single-celled organism?
a. amoeba
b. insect
c. fish
d. worm
Which is a function of the cardiovascular system?
A to move water throughout the body
B to provide structural support for the body
C to eliminate waste from the body
D to transport gases throughout the body
Which body system sends electrical signals to all other body systems?
a. circulatory
b. digestive
c. muscular
d. nervous
Which statement best describes a bacterial cell?
A It contains more than one cell.
B It is a complete organism.
C It is part of a larger organism.
D It contains different kinds of cells.
Which example best shows structures that make up the digestive system in the human body?
A heart, blood, vessels
B nose, trachea, lungs
C brain, spinal cord, nerves
D esophagus, stomach, intestines
