1
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
Which is an example of a single-celled organism?
A amoeba
B insect
C fish
D worm
A amoeba
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 blood throughout the body
D to transport blood throughout the body
Which organism is a producer?
A frog
B mushroom
C grass
D lizard
C grass
A pot is heated on a stove. Which process causes the metal handle of the pot to also become hot?
A combustion
B convection
C radiation
D conduction
D conduction
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.
D Both are caused by changes in heat energy.
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
Which is most responsible for the uneven heating of the air in the atmosphere?
A radiation
B convection
C conduction
D condensation
B convection
Which is most responsible for recycling dead plants and animals in an ecosystem?
A water
B bacteria
C fish
D insects
B bacteria
Which body system sends electrical signals to all other body systems?
A circulatory system
B digestive system
C muscular system
D nervous system
D nervous system
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
A his height
Which will most likely result from a low-pressure weather system?
A warm temperatures
B cloudy conditions
C clear conditions
D cool temperatures
B cloudy conditions
If 10 grams of water are added to 5 grams of salt, how much salt water will be made?
A 2 grams
B 5 grams
C 10 grams
D 15 grams
D 15 grams
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.
D The heat from the fire radiates from the fire to the people.
Andy lives in the southern hemisphere. What season does he most likely experience in August?
A spring
B summer
C winter
D autumn
C winter
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 begin growing in the ecosystem.
A The ecosystem will become overpopulated with snakes.
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 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
D esophagus, stomach, intestines
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
B sunny
Which is a characteristic of a dog that is most likely a result of its environment?
A its color
B its length of ears
C its food preference
D its ability to see in the dark
C its food preference
The weather forecast indicates that 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 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?
A paper clip
B piece of paper
C eraser
D rubber ball
A paper clip
What is the cause of rising surface temperatures of the Pacific Ocean, drought in the western United States, and flooding on the Pacific coast of South America?
A the Gulf Stream
B the jet stream
C La Niña
D El Niño
D El Niño
Which is the best indicator for predicting weather conditions?
A. A Wind Vane
B. Fronts
C. Air Pressure
D. Air Masses
C. Air Pressure
What will most likely result when the jet stream moves south of North Carolina?
A North Carolina will experience tropical weather conditions.
B North Carolina will experience hot, dry weather.
C North Carolina will experience mild weather.
D North Carolina will experience cold weather.
D North Carolina will experience cold weather.