Force and Motion
Chris climbs onto a skateboard ramp halfway between the top and the bottom of the ramp. Because gravity acts on Chris, which is most likely to happen?
A. He won’t move.
B. He will roll up the ramp.
C. He will roll down the ramp.
D. He will float above the ramp.
C. He will roll down the ramp.
How would water vapor cooling and forming clouds impact the water cycle?
A. by increasing runoff
B. by increasing evaporation
C. by increasing precipitation
D. by increasing transpiration
C. by increasing precipitation
Which best describes heat transfer due to convection?
A. It occurs with direct contact.
B. It occurs only during the day.
C. It occurs with movement of a fluid.
D. It occurs only when something is burning.
C. It occurs with movement of a fluid.
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 changes in heat energy.
D. Both are caused by the warming of the atmosphere.
C. Both are caused by changes in heat energy.
Which best explains how two ecosystems benefit each other?
A. Oceans provide water for plants trying to survive in deserts.
B. Estuaries provide a safe breeding area for ocean organisms.
C. Grasslands provide food for organisms living in oceans.
D. Forests provide a hiding place from fires in grasslands.
B. Estuaries provide a safe breeding area for ocean organisms.
A rocket is traveling toward space. What force must the rocket act against as it moves away from Earth?
A. inertia
B. gravity
C. magnetism
D. momentum
B. gravity
When Maria went for a walk early in the morning, she noticed the ground was wet. It had not rained overnight, but there were water droplets on the grass.
What BEST explains why the water droplets formed on the grass?
A. Clouds formed.
B. The Sun went down.
C. Winds became stronger.
D. The air temperature became cooler.
D. The air temperature became cooler.
Which best explains why many car motor parts are made from metal instead of plastic?
A. Metal can withstand heat better than most plastics.
B. Plastic is more expensive than metal.
C. Plastic is less flexible than metal.
A. Metal can withstand heat better than most plastics.
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 cold weather.
C. North Carolina will experience hot, dry weather.
D. North Carolina will experience mild weather.
B. North Carolina will experience cold weather.
Which is most responsible for recycling dead plants and animals in an ecosystem?
A. water
B. bacteria
C. fish
D. insects
B. bacteria
Which would most likely be the title of a graph with the y-axis labeled miles and the x-axis labeled hours?
A. Speed of the Car
B. Hours Spent Driving
C. Volume of a Car Over Time
D. Friction on a Moving Vehicle
A. Speed of the Car
Sam built a rocket using a full set of blocks. How would taking the rocket apart effect the total mass of the blocks?
A. The total mass of the blocks would double.
B. The total mass of the blocks would be the same apart as together.
C. The total mass of the blocks would decrease because they are together.
D. The total mass of the blocks would increase because the blocks are apart.
B. The total mass of the blocks would be the same apart as together.
Which statement best describes how winter weather can damage roads?
A. Snow and ice can cause car accidents, which damage roads.
B. Water can get into cracks in roads, then freeze and expand, making the cracks worse.
C. Rain, ice, and snow can cause the painted lines on roads to fade.
D. Cold temperatures can cause road materials to expand, creating potholes.
B. Water can get into cracks in roads, then freeze and expand, making the cracks worse.
The weather forecast indicates that a cold front will be moving into the area in the next 24 hours. Which type of weather will most likely result?
A. clear skies, cold temperatures, and wind
B. clear skies, hot temperatures, thunderstorms
C. heavy hail, wind gusts, and snow
D. cooler temperatures, heavy rain or thunderstorms, and gusty wind.
D. cooler temperatures, heavy rain or thunderstorms, and gusty wind.
This diagram shows a simple ocean food chain.
algae → fish → seal
Which will most likely occur if the fish population decreases?
A. The algae and seal populations will increase.
B. The algae and seal populations will decrease.
C. The algae population will increase, and the seal population will increase.
D. The algae population will increase, and the seal population will decrease.
D. The algae population will increase, and the seal population will decrease.
81. A librarian stacked two identical carts of books. One cart was completely filled, while the second was half-filled. What will happen when the carts are moved?
A. Both carts will require the same amount of force to push.
B. The cart with the most books will require a greater force to push.
C. The cart with the fewest books will require a greater force to push.
D. The cart with the most books will require a greater force of gravity to push.
B. The cart with the most books will require a greater force to push.
Which of the following is an example of a chemical change?
A. clouds forming
B. sugar dissolving
C. water freezing
D. a candle burning
D. a candle burning
A student is trying to open a jar with a metal lid. The lid of the jar is very tight, and the student is not able to open it. The student puts the jar and lid under hot water, and then attempts to open it. The lid easily opens. Which best explains why the lid was easy to open after putting it under hot water?
A. The hot water melted the glue that was holding the lid shut, making it easier to open.
B. The hot water expanded the metal lid of the jar, making it easier to open.
C. The hot water caused the jar to contract, making the lid easier to open.
D. The hot water made it easier for the student to get a grip on the jar, so it was easier to open.
B. The hot water expanded the metal lid of the jar, making it easier to open.
On a warm, sunny day, the local weather forecaster predicts that a low-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. cold
B. sunny
C. snowy
D. rainy
D. rainy
Noah visited a park that had many oak trees. Which BEST describes the niche of an oak tree in its ecosystem?
A. Oak trees can live for a long time.
B. Oak trees have leaves that change colors.
C. Oak trees have strong branches and trunks.
D. Oak trees are a source of food and shelter for animals.
D. Oak trees are a source of food and shelter for animals.
Kyle rode his bike for 30 minutes. He noticed that he traveled farther in the first 15 minutes then he did in the second 15 minutes. Which conclusion can Kyle draw about his bike ride?
A. He rode at a constant speed.
B. He rode downhill the entire trip.
C. He rode faster the first fifteen minutes.
D. He rode slower the first fifteen minutes.
C. He rode faster the first fifteen minutes.
A glass of water is placed outside during a hot day. After a few hours, someone notices that there is less water in the glass. Which best explains why this happened?
A. water melted; gas formed
B. water evaporated; gas formed
C. water evaporated; liquid formed
B. water evaporated; gas formed
Clarissa wants to determine the best material to make a new type of cookware. What type of material should she choose?
A. A material that conducts heat evenly.
B. A material that can be easily bent into shape.
C. A material that does not transmit electricity.
D. A material that will remain cool to the touch.
A. A material that conducts heat evenly.
What happens to atmospheric pressure the higher you travel in the atmosphere?
A. The atmospheric pressure decreases.
B. There is no atmospheric pressure the higher you travel.
C. Nothing the atmospheric pressure stays the same.
D. The atmospheric pressure increases.
A. The atmospheric pressure decreases.
SUN ➡ GRASS ➡GRASSHOPPER AND RABBIT➡ FOX
The removal of which organism would result in the MOST damage to the ecosystem?
A. fox
B. rabbit
C. grasshopper
D. grass
D. grass