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Worksheets23-24 BEM Review
Total questions: 57
Worksheet time: 1hrs 24mins
The chart shoes properties of four elements.
Based on these properties, which element is most likely a nonmetal?
Element 1
Element 2
Element 3
Element 4
If a fluorine atom has a mass number of 19, how many neutrons are in the atom?
(a)
What is the difference in the number of electrons in an atom of selenium, Se, and the number of electrons in an atom of aluminum, Al?
(a)
Label the parts of the atom.
Electron Cloud
Proton
Neutron
Electron
Nucleus
Sodium and Lithium have similar chemical properties. What characteristics of these elements explains why they are chemically similar?
Their atoms both have one valence electron.
Their atoms both have more neutrons than protons.
Their atoms have the same number of energy levels.
Their atoms contain equal numbers of protons and electrons.
The diagram shows a model of an atom. The model has a four different symbols on it. Each symbol represents a different role for one of the particles within the atoms.
In this model, which particle determines the reactivity of this atom?
Place the labels in the correct place.
Period 4 - 4 energy levels
Group 1 - 1 valence electron
Group 13 - 3 valence electrons
Group 18 - 8 valence electrons
Period 2 - 2 energy levels
The elements on the left side of the periodic table of elements are mainly:
metals
nonmetals
metalloids
The elements on the right side of the periodic table of elements are mainly:
metals
nonmetals
metalloids
The elements along staircase (zig zag line) on the periodic table of elements are:
metals
nonmetals
metalloids
A scientist performs tests on a sample of an element. The element is a shiny solid that conducts electricity and heat. The scientist is able to bend and flatten the sample when pressure is applied.
Based on this information, the element could NOT be a member of which group on the periodic table?
Group 2
Group 8
Group 12
Group 18
The mass of an unidentified rock is 15.5 grams. Students determine the volume of the rock by placing the rock in a graduated cylinder with water. The students calculate the density of the rock. They determine the identity of the rock based on the density ranges in the table. The student most likely has (a)
Think: What is the formula for density? What information can I get from the graduated cylinder?
Label parts of a plant cell.
Students create a table that lists processes observed in nature. Which process describes only a PHYSICAL change?
Think: What needs to form to be a chemical change?
Process 1
Process 2
Process 3
Process 4
A compound secreted by honeybees to paralyze intruders in their hive is known as 2-heptanone. The formula for this compound is shown.
CH3(CH2)4COCH3
How many atoms of each element are in one molecule of 2-heptatone?
4 carbon atoms, 11 hydrogen atoms and 1 oxygen
7 carbon atoms, 14 hydrogen atoms and 1 oxygen
7 carbon atoms, 11 hydrogen atoms and 8 oxygen
6 carbon atoms, 14 hydrogen atoms and 3 oxygen
Strontium phosphate, Sr3(PO4)2, is a crystalline substance used in medicine and industry. How many phosphorus atoms are represented in the formula, Sr3(PO4)2?
(a)
Which statement best describes evidence that a chemical reaction occurs as a cake bakes?
The water in the cake batter evaporates.
The cake rises as gas bubble form in the baking cake.
The cake takes the shape of the container in which it is baked.
The water in the cake batter is used to keep the cake moist as it bakes.
Roller coasters are popular attractions amusement parks. A cart on a roller coaster approaches the highest point on the coaster. As the cart reaches the top, it slows down. Which statement best describes the energy of the roller coaster as it SLOWS down while traveling to the top of the coaster. (Coming to an end)
The cart gains both kinetic and potential energy.
The cart gains kinetic energy and loses potential energy.
The cart loses kinetic energy and gains potential energy.
The cart loses both kinetic and potential energy.
According to the above diagram, at what point would the roller coaster car have the greatest kinetic energy?
3
4
5
6
A demonstration helps students understand a principle of roller coaster design.
Which answer choice correctly describes the ball’s kinetic and potential energy?
The ball has more potential energy at position X than at position Z.
The ball has more kinetic energy at position Y than at position W.
The potential energy and kinetic energy of the ball are equal at position X.
The potential energy and kinetic energy of the ball are greatest at position Z.
(6.8C) A horse trainer records the distance a horse travels during three different trials. What is the horse's average speed in kilometers per minute?
(a)
(6.8C) The distance a toy car travels over time is shown in the graph. Which table best shows the average speed of the toy car at different time intervals?
What was occurring from point B to point C?
What is occurring from point A to point B?
Students built a circuit. The circuit has wires that connect a battery to a switch and a fan.
Which energy transformations happen when the students close the circuit and the blades of the fan begint he spin?
chemical to mechanical to electrical
electrical to chemical to mechanical
chemical to electrical to mechanical
mechanical to electrical to chemical
Farmers can best reduce negative effects on the water quality of nearby streams and lakes by planting crops that -
produce less oxygen
produce less carbon dioxide
need less fertilizer
need less solar energy
What two crustal features occur near every subduction zone?
Volcanoes and Trenches
Rift Valleys and Mid Ocean Ridges
Volcanoes and Rift Valleys
Mid Ocean Ridges and Trenches
A mid-ocean RIDGE is located at the boundary of two tectonic plates. Which diagram correctly models the relative plate motion on each side of a mid ocean ridge?
The letter B represents
Subduction zone
Trench
Oceanic crust
Island Volcano Arc
Which plate is the SUBDUCTING or sinking plate in a convergent boundary?
The dense oceanic plate
The Thick continental plate
Neither
Both ocean and continental plate can sink.
Match the plate boundary to its definition.
Plates spread apart
Divergent
Plates come together
Convergent
Plates slide past each other
Transform
The photograph shows a satellite view of the desert coast of Egypt and the Red Sea.
Researchers predict that in the future, the land area of point X will be REDUCED by erosion.
Which event will cause the most weathering and erosion to the land area at point X?
Increasing salinity of seawater near the land
Intense rays from the sun striking the land
Solids floating in seawater depositing on the land
Strong storm winds blowing across the land
A river area is shown on the topographic map. Four riverbank areas are labeled on the map.
Which teo riverbanks are the steepest?
W and X
Y and Z
X and Y
W and Z
Maps of predicted weather conditions are shown.
Which answer choice best describes the weather at location X on Day 1 and Day 2?
Day 1: warm and rainy
Day 2: cool with more rain
Day 1: warm and windy
Day 2: cloudy and cold
Day 1: clear and cool
Day 2: warm and rainy
Day 1: cold and rainy
Day 2: clear and sunny
Students observe a unknown species during a field study. They observe that the organism is multicellular, is autotrophic, and can reporoduce both sexually and asexually.
Which kingdom does this organism most likely belong to?
Archaea
Animalia
Bacteria
Plantae
Which list of characteristics describes organiams classified as animals?
Unicellular, prokaryotic, autotrophic
Multicellular, eukaryotic, heterotrophic
Unicellular, eukaryotic, heterotrophic
Multicellular, eukaryotic and autotrophic
A partial grassland food web is shown.
(look at your food web)
Which of the following best describes a relationship in this grassland?
A. Badgers are top predators because they eat upland sandpipers and beetles.
B. A producer-consumer relationship exists between lupines and ants.
C. A predator-prey relationship exists between beetles and ground squirrels.
D. Upland sandpipers are primary and secondary consumers because they eat grasses and grasshoppers.
A farmer digs a small pond in a pasture. The farmer adds young individuals from two species of algae-eating fish to the pond and plants some reeds around the edges of the pond. The farmer wants the pond to be a sustainable ecosystem.
Which of the following would be most helpful in increasing the pond ecosystem's sustainability?
Decreasing the number of plant species around the edges of the pond
Introducing older fish of the same species into the population of algae-eating fish
Having a greater diversity of living organisms in the pond
Adding gravel between the water and where the reeds are planted
Primary succession occurs when pioneer species move into an area that has not plants. Which organisms are common pioneer species?
Conifer tree and tall grasses with roots that loosen the soil
Mossess and lichens that can grow on rocky surfaces
Grasses and weeds that arrive as seeds carried by the wind and then germinate in rich soil
Vines and shrubs that help prevent the erosion of shallow soil
Match the organ system with its function
Nervous System
Controls the body
Circulatory System
Transports oxygen and nutrients through the body
Muscular System
Helps move the body
Excretory System
Removes waste
Match the organ system with its function(s).
Integumentary System
Protects the body and helps control body temperature
Skeletal System
Provides support, protects organs, helps the body move
Respiratory System
Takes in oxygen and removes carbon dioxide
Digestive System
Breaks down food, absorbs nutrients, and removes waste
Which three systems work together to move the body?
skeletal, respiratory, digestive
nervous, cardiovascular, skeletal
skeletal, muscular, nervous
cardiovascular, respiratory, digestive
Which of the following are parts to the cell theory?
All living things are made of cells
Cells are the smallest unit of life
Cells can only come from other cells
There are many different types of cells
Which organelle is only found in a plant cell?
nucleus
chloroplast
mitochondria
cell membrane
A rigid layer that lies outside the cell's membrane is...
Cytoskeleton
Cilia
Cell Wall
Flagella
What organelle is called the "powerhouse" of a cell?
Endoplasmic Reticulum
Nucleus
Mitochondria
Nucleolus
jello-like material, fills the space between cell organelles, is where many chemical reactions occur
cytoplasm
chromatin
chloroplast
cell membrane
Three different species of plants that live in the desert are shown.
Species Z can successfully share the same environment with the other plants shown because species Z absorbs water --
found deep underground, and species X absorbs water near the soil surface
found deep underground, and species X absorbs water found deep underground
near the soil surface, and species Y absorbs water near the soil surface
near the soil surface, and species Y absorbs water found deep underground
A Texas Gulf Coast food web is shown.
According to this food web, which organisms would the bobcat and diamondback rattlesnake compete for if the mouse population and swamp rabbit population decreased?
Raccoon and sparrow
Raccoon and Eastern cottontail rabbit
Sparrow and seeds
Sparrow and Eastern cottontail rabbit
Wild hogs introduced to Texas from Europe became feral after the hogs escaped from the ranches where they lived. Feral hogs are omnivores that feed on native plants, crops, and small animals. Feral hogs can damage an ecosystem by rooting through the soil to look for food and trampling small plants.
Which types of native organisms do feral hogs most likely compete with for food sources?
Carnivores and producers
Herbivores and carnivores
Producers and decomposers
Decomposers and herbivores
Buffelgrass is an invasive species of grass from Africa that outcompetes native Texas grasses for space and water. Which long-term change to a Texas grassland would most likely occur due to the introduction of buffelgrass?
The population of native grasses will increase.
The population of native grasses will decrease.
Buffelgrass offspring will develop traits like those of native grasses.
Buffelgrass offspring will develop traits like those of other invasive species.
Trees lose water through transpiration, when water evaporates from leaves. The list describes types of tree leaves that help reduce the amount of transpiration. Which of these is most likely observed in an area experiencing a long-term drought?
Trees with broad leaves will be more healthy than trees with
needlelike leaves.
Trees with leaves that have waxy coverings will be more healthy
than trees without wax-covered leaves.
Trees with broad leaves will be more healthy than trees with
small, flat leaves.
Trees with leaves without any hair-like structures will be more
healthy than trees with leaves covered by hairlike structures.
Humans depend upon food that comes from the ocean. Some
human activities negatively impact these food supplies. Which statement provides the best evidence that human activities contribute to this impact?
Human visitors to coral reef systems break corals growing on
rocks.
Humans catch marine fish at a faster rate than the fish are able
to reproduce.
Humans raise fish in a hatchery for commercial sale.
Humans construct artificial reefs to attract tourists.
