Physical Properties of Matter
A teacher mixes white powder into a beaker of water. The powder cannot be seen in the water. The teacher then heats the mixture until the water evaporates and the powder can be seen again. Which property of the powder is the teacher demonstrating?
A. Solubility
B. Density
H. Conductivity
J. Mass
What is...
A. Solubility
Which of these best demonstrates the reflection of light?
A. Looking through the glass of a large window
B. Looking at an image formed on a silver spoon
C. Looking at a lightbulb that is glowing
D. Looking at a star on a clear night
What is...
B. Looking at an image formed on a silver spoon
A narrow V-shaped valley is the result of -
A. a young river
B. a glacier
C. an earthquake
D. a volcano
What is...
A. a young river
A student observes the following activities while walking in a park.
- A fire ant digging a tunnel in sandy soil
- A blue jay drinking water from a puddle
- A bee collecting pollen from a tree
- A hawk circling in the air over a tree
A. fire ant
B. blue jay
C. bee
D. hawk
What is...
C. bee
George was drinking coffee. He decided it was too bitter and added some sugar. What likely happened to the coffee when adding sugar?
A. The coffee evaporated
B. The coffee became more bitter
C. The coffee became sweeter
D. The coffee turned white
What is...
C. The coffee became sweeter
Which of these is the best conductor of electricity?
F. Glass rod
G. Cotton string
H. Plastic tubing
J. Copper penny
What is...
J. Copper penny
A student uses a set of headphones to listen to music. Which of these objects uses the same source of energy as the headphones?
A. A flute using wind energy
B. A piano using mechanical energy
C. A keyboard using electrical energy
D. A teapot using thermal energy
What is...
C. A keyboard using electrical energy
Sedimentary rock is the most common type of rock on Earth´s surface. Which statement correctly states how sedimentary rock is formed?
A. It is formed by decaying organisms under pressure with little oxygen.
B. It is formed when sediments get pressed down together over time and under pressure.
C. It is formed when lava cools on Earth´s surface.
D. It is formed when fossils break down into little pieces.
What is...
B. It is formed when sediments get pressed down together over time and under pressure.
Some beetles break down the remains of dead animals. Some mushrooms break down the remains of dead trees. How do these actions most benefit plants?
A. by returning nutrients to the soil
B. by releasing oxygen to the air
C. by making space for new animals
D. by decreasing the population of herbivores
What is....
A. by returning nutrients to the soil
A student measures rainfall during a storm event. In 12 hours, 16 cm of rain falls. Taking rainfall data over a short period of time provides what type of information?
A. Air pollution
B. Weather
C. Climate
D. Temperatrue in Celsius
What is...
B. weather
Objects that blow into a swimming pool or that are dropped into the pool by swimmers need to be removed. These objects include foam cups, keys, and coins. Which of the following explains a useful method for removing some of these objects?
A. The keys and coins are less dense than water, so they can be easily picked up off the bottom of the pool.
B. The foam cups have the same density as water, so they can be crumbled up for removal by the pool filter.
C. The foam cups are less dense than water, so they can be removed from the surface witha pool cleaning net.
D. The keys and coins have the same density as water, so they can be washed away when the pool is drained.
What is...
C. The foam cups are less dense than water, so they can be removed from the surface witha pool cleaning net.
Some students pain the insdie of several boxes. They paint each box a different color. They observe that the inside of the box painted white looks brighter than the others. What is the most likely reason this box looks brighter?
A. More light is reflected off white paint
B. More Light is refracted by white paint
C. More light passess through white paint
D. More light is absorbed by white paint
What is...
C. A keyboard using electrical energy
The Sun, Earth, and Moon are objects in the solar system. Which statement accurately describes these space objects?
A. The Sun, Earth, and Moon all have liquid water.
B. The Earth is larger than the Moon and the Sun.
C. The Earth and Moon are both made of rocks.
D. The Sun is the largest object that reflects the light of Earth.
What is...
C. The Earth and Moon are both made of rocks.
In fall and winter many trees lose their leaves in response to cooler temperatures and -
A. a decrease in average wind speed
B. fewer hours of daylight
C. an increase in humidity
D. more direct sunlight
What is...
B. fewer hours of daylight
Which of these is a learned behavior of a mouse?
A. building a nest
B. grooming and cleaning its fur
C. running through a maze to get cheese
D. fleeing (running fast) from a predator
What is...
C. running through a maze to get cheese
A teacher wears protective gloves to lift a metal pan filled with boiling water from a hot plate. Why are the protective gloves necessary?
F. The metal pan creates thermal energy.
G. The metal pan insulates thermal energy.
H. The metal pan conducts thermal energy.
J. The metal pan reduces thermal energy.
What is...
H. The metal pan conducts thermal energy.
When a bat searches for prey at night, it mades sounds as it flies, and it uses the sounds´ echoes to find its prey. When the bat flies and llistens to echoes to locate prey, it is using -
A. Thermal energy and light energy
B. Sound energy and thermal energy
C. Mechanical energy and sound energy
D. Light energy and mechanical energy
What is...
C. Mechanical energy and sound energy
A student uses a globe and flashlight to model the day-night cycle on Earth. What else does the student need to do in order to properly model this?
A. Tilt the globe.
B. Sping the glove so it rotates on an axis.
C. Turn the flashlight on and off.
D. Walk the glove around a foam ball representing the Sun so the globe revolves around it.
What is...
B. Sping the glove so it rotates on an axis.
Which effect would most likely occur if a six-lane highway were built through an ecosystem?
A. competition for resources would be reduced
B. habitats available to animals would be reduced
C. air pollution would decrease
D. water pollution would decrease
What is...
B. habitats available to animals would be reduced
Sheila is moving to a new house. She puts many heavy boxes into a wagon. She is unable to push the wagon. Which statement is correct?
A. Force was used, and work was done on the wagon
B. Force was not used, but work was done on the wagon
C. Force was not used, and work was not done on the wagon
D. Force was used, but work was not done on the wagon
What is...
C. Force was not used, and work was not done on the wagon
A student observed liquid wax dripping down the side of a burning candle. After putting out the flame of the candle, the student left the room. Several hours later the student observed that there was no longer any liquid on the side of the candle. Which statement explains what most likely happened to the liquid wax?
A. The heat given off by the flame caused the candle wax to evaporate.
B. The liquid wax changed back into a solid as it cooled.
C. The liquid wax condensed and was absorbed by the candle.
J. None of these.
What is...
B. The liquid wax changed back into a solid as it cooled.
A student recorded the time it took for all the water in a puddle on a sidewalk to evaporate after a rain. Which kind of energy causes water to evaporate?
A. Light energy from streetlights
B. Sound energy from passing cars
C. Thermal energy from the environment
D. Mechanical energy from the nearby streets
What is...
C. Thermal energy from the environment
Pat does an experiment of different soil types. In one soil sample, the water does not drain through the pot at all. The soil feels very fine and slippery to the touch. The soil Pat observed likely has what type of material in it?
A. clay
B. sand
C. loam
D. silt
What is...
A. clay
Which other populations most likely decrease as a result?
A. organisms that eat algae
B. organisms that live on farms
C. organisms that eat fish and shellfish
J. All of these
What is...
C. organisms that eat fish and shellfish
Which planet is farthest from the Sun?
A. Uranus
B. Jupiter
C. Neptune
D. Mercury
What is...
C. Neptune