Forces and Motion
What happens to the weight of a sheet of paper when the sheet of paper is shredded?
The total weight of the shredded pieces equals the weight of the sheet of paper.
Jennifer rode her bike during the fall months. She left it outside during the winter, and snow fell and covered the bike. In the spring, the snow melted. Jennifer then noticed the bike was covered in rust. Which of Jennifer’s observations is evidence of a new substance forming?
rust forming on the bike
A meteorologist predicted clear, sunny skies. Which weather data most likely helped her make this prediction?
an increase in air pressure
Which model shows how an organ system is organized in the human body?
cell → tissue → organ system → organ
cell → tissue → organ → organ system
organ system → tissue → organ → cell
organ system → cell → tissue
cell----tissue-----organ------organ system
This is a food chain in a small pond ecosystem.
sun → plants → small fish → large fish → heron
A disease spreads through the pond ecosystem and kills most of the small fish. What is most likely to happen to the large fish population? The plant population?
The large fish population will decrease and the plant population will increase.
Kenneth carried out an investigation to measure a ball’s speed. First, he placed a meter stick flat on the classroom floor. Then, he gave the ball a short push, releasing the ball when it reached the “0 cm” mark on the meter stick. The diagram below shows how far the ball rolled every two seconds.
At 2 seconds = 20 cm
4 seconds = 40 cm
6 seconds = 60 cm
What is the ball's position at 5 seconds?
50 cm
A pot containing 500 mL of water is brought to a boil. Later, the pot contains 400 mL of boiling water. Why is there a difference in the amount of water in the pot?
100 mL of water changed into water vapor.
Asheboro is located in the central part of North Carolina and Grantsboro is located on the coast of North Carolina.
Which city’s climate would be most influenced by the Gulf Stream?
Grantsboro, because it is closer to the coast
Which body system is a source of motion?
muscular
Land clearing removes all of the plants from a large area. How will animals in this area most likely be affected by this change?
The number of all types of animals will go down because there are no producers in the area
Malika rolls a ball across a flat, horizontal floor. Eventually the ball comes to a stop without hitting anything. Which choice best explains why the ball comes to a stop?
because of friction acting on the ball
Oliver has an ice cube and a cup of liquid water. What could Oliver do to show that the ice cube and liquid water are the same substance?
chill the liquid water until it freezes
How would an increase in cloud cover most likely affect the water cycle on Earth’s surface?
Evaporation would decrease, because there would be less sunlight reaching the ground
Pick the 3 choices that are learned behaviors in some animals.
dog sitting to receive a treat
chimpanzee using a stick as a tool
whale migrating to find new food
squirrel hibernating during the cold winter months
bird making an alarm call when a predator is near
dog receives treat
chimpanzee using stick
bird making alarm call
This is a food chain for a forest ecosystem.
sun----grass----grasshopper----frog-----snake----hawk----fungi
Which organism is the decomposer in this food chain?
fungi
Donald and Janet ran a race against each other around their school’s track. Donald finished the race in 8 minutes, and Janet finished in 7 minutes. Which statement best explains the difference in time?
Janet ran with a faster speed than Donald.
“She pours the soda into a glass containing ice cubes and gives it to Steve.” What could Steve do to show that mixing the ice cubes and soda did not create a new substance?
remove the ice cubes from the soda
Tuesday Temp. 65 Precipitation 0.0
Wednesday Temp. 74 Precipitation 2.0
Thursday Temp. 72 Precipitation 1.0
Friday Temp. 67 Precipitation 0.0
On which day did the most rain fall in the city?
Wednesday
Which body system provides structure and support?
skeletal
A field is full of vegetation. A rabbit population lives in the field. There is a sudden increase in the population of rabbits, resulting in more rabbits than there were last year. How will this affect the field?
The field will contain less vegetation because the rabbits will eat more vegetation than last year
Why does a person weigh less on the moon than on Earth?
because the gravitational force is lower on the moon
Which is an example of a new substance being formed?
ice melting and becoming liquid
metal changing shape when heated
wood burning and turning to ash
water evaporating into the air
wood burning and turning to ash
What 3 weather conditions indicate a severe storm is likely?
clear skies, dark/cloudy skies, a rise in air pressure, a drop in air pressure, a decrease in wind speed, an increase in wind speed
You must pick 3
dark/cloudy skies
a drop in air pressure
an increase in wind speed
The pancreas is an organ that helps the body break down food. Which choice represents how the pancreas fits into the levels of organization in the human body?
pancreas cell → pancreas → pancreas tissue
pancreas tissue → pancreas → pancreas cell
pancreas tissue → pancreas → digestive system
digestive system → pancreas tissue → pancreas
pancreas tissue ----pancreas ----- digestive system
Which characteristic of a person is most likely a result of the person’s environment?
allergies
hair color
earlobe shape
dimples
allergies