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WorksheetsScience SLT Post Test
Total questions: 31
Worksheet time: 16mins
A rock that weighed exactly 5 pounds was placed on the ground behind a school. No person or animal touched the rock for 5 years. The rock was weighed after this period of time, and it weighed less than 5 pounds. What most likely caused this change in the rock's weight?
The rock absorbed nutrients from the ground.
Parts of the rock were worn away by rain and wind.
Parts of the rock were pulled into the ground by gravity.
The rock absorbed energy from the Sun.
A plant's _______ hold the plant in place and take in water from the soil.
leaves
flowers
roots
stems
Where do coal and oil come from?
resources created in power plants and processing plants
resources that are formed through wind and solar power
natural resources that are developed by humans
natural resources that come from the Earth
The image below shows a map of volcanoes located in or near the Pacific Ocean. The more red area in a region, the more volcanoes there are. The volcanoes in the red regions form the "Pacific Ring of Fire." Which of the following conclusions can be drawn from the map?
A. Most of the volcanoes occur along the boundaries between continents and the Pacific Ocean.
B. Most of the volcanoes occur randomly and do not follow a pattern.
C. Most of the volcanoes occur in the center of the continents.
D. Most of the volcanoes occur in the center of the Pacific Ocean.
A dam is constructed on a river to provide continuous electricity supply to a nearby factory. What is one disadvantage of constructing dams?
The supply of electricity will decrease.
More fossil fuels will be used for making electricity.
Less rainfall will be received in the area.
Some ecosystems will be destroyed.
A dog sees a cat and gets close to it. The dog is scratched by the cat, and the dog runs away in pain. One day later, the dog sees the cat again. Which of the following will most likely happen based on the dog's memory?
It will follow the cat.
It will attack the cat.
It will avoid the cat.
It will fall asleep close to the cat.
If Steve wants to make fewer waves on the same piece of rope, what should he do?
A. He should move the rope up and down more slowly.
B. He should move the rope up and down with more force.
C. He should move the rope up and down more quickly.
D. He should move the rope up and down with less force.
Darren and Meredith are having a snowball fight. They both throw a snowball at the same time, but Meredith's snowball travels faster and farther than Darren's snowball. Both snowballs have the same mass. Which of the following is true about the snowballs as they fly through the air?
Darren's snowball has more energy of motion than Meredith's snowball.
Neither snowball has any energy.
Meredith's snowball has more energy of motion than Darren's snowball.
Both snowballs have the same energy of motion.
As kudzu vines spread in an area, what could be expected to happen?
an increase in the varieties of mammals and insects
an increase in the number and varieties of trees
a decrease in the amount of land covered by plants and trees.
a decrease in the amount of sunlight reaching other plants.
Which student climbs the steepest slope to get to the top of the hill?
A. Marisol
B. Lin
C. Barry
D. Tanisha
Several lake communities observed that too much blue-green algae was growing on the surface of several of their lakes. Scientists tested some possible solutions to this problem. Mechanical mixing machine prototypes were placed on the surface of a small pond for testing. These machines were designed to allow a pump to circulate water better throughout the pond to prevent the growth of algae. When the mixers were placed on the pond surface, their batteries had to be replaced frequently, which was costly and a possible environmental problem.
What would be the best way to improve the prototype to address this problem?
Attach solar panels to the mixer.
Place a larger pump into the mixer.
Attach heavy weights to the mixer.
Move the mixer closer to the shore.
There is a hill next to Charlie's school. Every time it rains, mud from the hill covers the playground. What could be done to stop the mud from covering the playground?
plant trees on top of the hill
put rocks on the playground
cover the hill in sand
make a wall of bricks in front of the hill
Which of these best describes why Mallory can see the pages of the book?
A. Sound reflected by the pages of the book enters Mallory's eyes.
B. Light reflected by the pages of the book enters Mallory's eyes.
C. Sound absorbed by the pages of the book enters Mallory's eyes.
D. Light absorbed by the pages of the book enters Mallory's eyes.
The picture below shows several cars racing. If all of the cars have the same mass, which car must have the most energy of motion?
the slowest car
the car in the lead
the fastest car
the car in the back
Karen is playing fetch with her dog, Clancy. As he chases the ball, what could Clancy do to increase his energy?
increase his speed
jump into the air
decrease his speed
change his direction
As the nutria population increases rapidly, what could be expected to happen in the area?
an increase in the variety of plants in the wetlands
a decrease in the amount of water in the wetlands
an increase in the size of the wetlands
a decrease in the amount of vegetation in the wetlands
Which of these would best keep people in an area safe during earthquakes?
building houses on stilts that keep them high off the ground
building houses out of materials that can bend without breaking
building thick walls around houses in the area
building underground shelters near houses in the area
Many barns like the one below were damaged in a certain area. What should the people in this area do to avoid this kind of damage?
make levees to keep flood waters away
build roofs that hold together in strong winds
attach lightning rods to roofs
stay in shelters during tornadoes
A frog jumps out of a lake and sees a snake lying nearby in the grass. Snakes are predators of frogs. The frog quickly jumps away from the snake. Which of these best represents the flow of information in the frog?
muscles → brain → eyes
brain → muscles → eyes
muscles → eyes → brain
eyes → brain → muscles
Elena is testing devices to light up her closet. She uses a simple device with a battery, a light bulb, a switch, and wires. Elena tests her device four times using different batteries and light bulbs. The table below shows the brightness of the light bulb and the cost of each set up.
Elena wants to pick the parts that will give her the brightest light, but she wants the device to cost less than $5.00. Which parts should she use?
Battery W and Light Bulb Z
Battery X and Light Bulb Z
Battery W and Light Bulb Y
Battery X and Light Bulb Y
Animals have different structures in their bodies that carry out specific life functions. Some animals have organs that take air into their bodies and allow oxygen from the air to enter their blood.
What is the name of this organ?
stomach
brain
heart
lung
The picture below shows several layers of rock. Marine fossils are found in layer three. Land-dwelling animal fossils are found in layer one. What does the type of fossils found in layer 3 tell us about the land in layer 3?
The area was at one time a desert.
The area was at one time underneath the ocean.
The area was at one time a rainforest.
The area was at one time covered by ice.
What happened when the club hit the ball?
A. Both the club and the ball lost energy.
B. Energy was transferred from the club to the ball.
C. Both the club and the ball gained energy.
D. Energy was transferred from the ball to the club.
The picture below shows a circuit. Which of these is a result of energy flowing throughout the circuit?
The switch is open.
The light bulbs are on.
The circuit is parallel.
The wires are connected.
A boy is playing with marbles. He places marble 1 on the ground. He rolls marble 2 toward marble 1. What will happen when marble 2 hits marble 1?
Marble 2 will gain energy, and marble 1 will lose energy.
Both marble 1 and marble 2 will lose energy.
Both marble 1 and marble 2 will gain energy.
Marble 1 will gain energy, and marble 2 will lose energy.
Landforms have changed during Earth's history. Which of these can be used to explain how the landforms in an area have changed over time?
the heights of mountains and the sizes of bodies of water
the amount of top soil and the weather patterns in the area
the patterns in rocks and the types of fossils in rock layers
the types of plants and animals species living in the area
How does the device let Jordan hear Bryan more clearly?
The device makes sounds on its own even when Bryan is not talking.
The device transmits the sounds Bryan makes over a distance.
The device decreases the volume of the sounds Bryan makes.
The device changes the pitch of the sounds Bryan makes.
The maps below show information about volcanoes and earthquakes in a certain region of Earth. Which statement best describes volcanoes and earthquakes?
A. Volcanoes and earthquakes are located all over Earth the same distance from each other in no pattern.
B. Volcanoes and earthquakes are located in the middle of continents far away from continent boundaries.
C. Volcanoes and earthquakes are located in bands on the boundaries between oceans and continents.
D. Volcanoes and earthquakes are located in bands in the middle of oceans far away from ocean boundaries.
What natural force is most likely responsible for the formation of the narrow passage through the cliffs in the picture?
Blowing wind eroded the soil
Flowing water eroded the soil
Ocean waves deposited soil
Gravity moved and deposited soil
Which statement best explains why this process results in weathering?
