Force and Motion
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
D) Ball with a mass of 20 kg
In which way are evaporation and condensation similar?
A) Both cause a decrease in air temperature
B) Both cause an increase in air temperature
C) Both are caused by the warming of the atmosphere
D) Both are caused by changes in heat energy
D) Both are caused by changes in heat energy.
Which is an example of a single celled organism?
A) amoeba
B) insect
C) fish
D) worm
A) Amoeba
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 ovre 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
A) because the temperatures over land and over water change
Which organism is a producer?
A) Frog
B) Mushroom
C) Grass
D) Lizard
C) Grass
Matt is a tall 11 year old boy. He has a scar on his right cheek. He is intelligent and an excellent drummer. Which trait did he most likely inherit?
A) His height
B) His scar
C) His intelligence
D) His ability to play the drums
A) His height
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 during the first half of her walk.
C) She walked in two different directions.
D) She was walking at a constant speed.
B) Her average speed was faster during the first half of her walk.
Which is an example of a different substance being formed?
A) Glass breaking
B) Metal melting
C) Water freezing
D) Wood burning
D) Wood burning
Why do multi-cellular organisms need transport systems?
A) Most have cells that are not able to exchange gases with the outside environment.
B) Most have cells that are unable to grow and survive in their environment.
C) Most have cells that need food from sources outsides their environment.
D) Most have cells that require more energy to survie than single-celled organisms.
A) Most have cells that are not able to exchange gases with the outside environment.
Which will most likely result from a low pressure system?
A) Warm temperatures
B) Cloudy conditions
C) Clear conditions
D) Cool temperatures
B) Cloudy conditions
Which is most responsible for recycling dead plants and animals in an ecosystem?
A) Water
B) Bacteria
C) Fish
D) Insects
B) Bacteria
Which characteristic would a child not inherit from one or both of its parents?
A) Freckles
B) Hair style
C) Eye color
D) Dimples
B) Hair style
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.
C) The ball goes slower and slower as it goes up, stops, and then goes faster and faster as it comes down.
Which is most responsible for the uneven heating of the air in the atmosphere?
A) Radiation
B) Convection
C) Conduction
D) Condensation
B) Convection
What 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
D) To transport gases throughout the body
Which best explains how air masses mover 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 moe from the Atlantic Ocean to the Pacific Ocean
A) The prevailing westerlies move air masses from west to east across the United States but may be deflected by the jet stream.
How would the woodpecker population in a forest area most likely be affected if a housing development is built in the 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
C) They would experience a decrease in available food
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 thes ame interest
B) They have similar DNA
What can cause a moving object to increase 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
B) A force that continually acts of the object in the direction the object is moving.
A pot is heated on the stove. Which process causes the metal handle to also become hot?
A) Combustion
B) Convection
C) Radiation
D) Conduction
D) Conduction
Which body system sends electrical signals to all other body systems?
A) Circulatory
B) Digestive
C) Muscular
D) Nervous
D) Nervous
Which has the greatest effect on wind speed?
A) Precipitation
B) Cloud cover
C) Wind direction
D) Air pressure
D) Air pressure
Which will most likely cause a decrease in predator populations?
A) An increase in prey population
B) A decrease in prey population
C) A decrease in decomposers
D) An increase in producers
B) A decrease in prey population
Which trait do children most likely inherit from their parents?
A) Shape of earlobes
B) Musical ability
C) Personality
D) Language
A) Shape of earlobes
A pencil falls off of a desk. What moves the pencil toward the floor?
A) mass
B) friction
C) gravity
D) speed
C) Gravity
Which process allows green plants to control the amount of water stored in their leaves?
A) photosynthesis
B) condensation
C) respiration
D) transpiration
D) Tramspiration
Which body systems provides protection to most of the major organs?
A) Skeletal
B) Muscular
C) Respiratory
D) Circulatory
A) Skeletal
The forcest indicates a warm front will be moving into the area in the next 24 hours. Which type of weather will most likely result?
A) clear skies and cold temperatures
B) clear skies and hot temperatures
C) cloudy skies and rainy weather
D) heavy snow and ice
C) Cloudy skies and rainy weather
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.
B) Both the lizard population and the hawk population will decrease
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 mothers 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 temperatures by their mother when they're first born
D) The kittens are taught by their parents to have similar traits
B) The kittens inherit some of their traits from their mother and some from their father