Physical Science
Which of these items is designed to produce heat from electricity?
A. a toaster B. a camera C. a blender D. a television
What is a toaster?
If a fox and an eagle eat some of the same organisms in an ecosystem, the relationship between the fox and the eagle could be classified as
a.competition b. mutualism c. predation d. parasitism
What is competition
As members of a food web, humans are considered to be
A. producers. B. consumers. C. decomposers. D. scavengers.
What is consumer?
What is the major cause of ocean waves?
A. wind B. ocean salinity C. Earth’s rotation D. the Moon’s gravity
What is wind?
Which energy resource is nonrenewable?
A. oil B. wind C. water D. sunlight
What is oil?
Solar cells absorb energy from the Sun. In order to use this energy to power household appliances, solar cells must convert the absorbed energy to
A. heat. B. light. C. radiation. D. electricity.
What is electricity?
Some plants rely on hummingbirds for pollination. If a deadly disease infected the hummingbird population, what would MOST likely happen to the plants?
A. They would die within hours. B. They would become endangered. C. They would need to migrate. D. They would grow at a slower rate.
What is they would become endangered?
A food chain is shown. Sunlight Grass Rabbit Snake What is the abiotic factor in this food chain?
A. Sunlight B. Grass C. Rabbit D. Snake
What is sunlight?
Solar radiation provides more heat near the equator than near the poles on Earth. The greatest amount of heat is moved away from the equator by
A. ocean currents. B. aquatic plants. C. surface winds. D. tectonic plates.
What is ocean currents?
Which of these actions causes wind?
A. rotation of Earth on its axis B. movement of air from water to land C. uneven heating of Earth’s surface D. air passing Earth as it revolves around the Sun
What is uneven heating of Earth's surface?
David switches on a fan on a hot day. Which statement BEST describes how energy changes to make the fan spin?
A. Electrical energy changes to heat energy. B. Wind energy changes to electrical energy. C. Heat energy changes to mechanical energy. D. Electrical energy changes to mechanical energy.
What is electrical energy changes to mechanical energy.
In a forest ecosystem, the niche of a squirrel population is
A. to decompose. B. to pollinate flowers. C. to recycle nutrients in the soil. D. to collect acorns and bury them in the soil
What is to collect acorns and bury them in the soil?
Sunlight is able to penetrate the top several meters of marine water, where most plant and animal life exists. Which of these systems are interacting in this description?
A. solar energy and ocean systems B. solar energy and weather systems C. weather systems and ocean systems D. solar energy, ocean systems, and weather systems
What is solar energy and ocean systems?
The morning temperature in a city is 41°F. If a sunny, mild day is forecast, which temperature is most likely for 2:00 p.m.?
A. 32°F B. 41°F C. 67°F D. 98°F
What is 67°F
A student hears on the radio that the outside temperature is 32ºC. What type of weather will the student MOST likely expect when she steps outside?
A. cool, rainy fall weather B. cold, snowy winter weather C. hot, sunny summer weather D. spring weather with flowers blooming
What is hot, sunny summer weather?
Riding a bicycle produces several forms of energy. Which form of energy is produced in the greatest amount by pedaling a bicycle down the sidewalk?
A. chemical B. radiant C. kinetic D. sound
What is kinetic?
A student hypothesizes that algae are producers. Which question will BEST help the student determine if this is correct?
A. Do algae consume other organisms? B. Which organisms consume algae? C. Do algae use sunlight to make food? D. Could an ecosystem survive without algae?
What is Do algae use sunlight to make food?
Forest fires can benefit an ecosystem. Which abiotic factor does a forest fire MOST likely positively impact?
A. Ashes become part of the soil when plants burn. B. Fire changes the average temperature of the ecosystem. C. Overall water increases because of methods used to fight the fire. D. Rain decreases because of added particles in the air during the fire.
What is Ashes become part of the soil when plants burn?
What information BEST helps a meteorologist predict the possibility of tornadoes developing in a certain area?
A. current wind conditions B. type of clouds in the sky C. percent humidity in the air D. amount of rainfall
What is type of clouds in the sky?
The polar jet stream is an air current that flows across North America. It flows much faster in winter than it does in summer. Why is it faster in the winter?
A. Northern air has more oxygen in winter. B. Northern air is warmer in winter. C. Northern air is colder in winter. D. Northern air is drier in winter
What is Northern air is colder in winter?
Molly was making iced tea by putting tea bags in boiling water. She needed to cool the hot tea quickly, so she poured it into a pitcher full of ice. Which BEST describes the flow of thermal energy?
A. from the ice to the tea B. from the tea to the ice C. from the pitcher to the tea D. from the ice to the pitcher
What is from the tea to the ice?
Krill are tiny, shrimp-like marine animals that float in ocean waters and eat phytoplankton such as algae. Krill are an important food for some whales, seals, and other marine animals. They are also harvested to produce krill oil, which is a supplement for human use. In which part of the ocean would you find krill?
A. coastal areas B. abyssal plain C. deep ocean currents D. open ocean surface
What is open ocean surface?
One hot summer, a grassland experienced a drought. Which MOST likely happened in the ecosystem during this time?
A. The competition for food among primary consumers increased. B. Nutrients cycled through the system at a faster rate. C. Less solar radiation was able to enter the system. D. Secondary consumers became extinct.
What is The competition for food among primary consumers increased?
Michael’s family is building a new house. They would like to use electricity generated by renewable resources. Which of these power supplies would help the family accomplish its goal?
A. gasoline engine B. solar roof panels C. coal power plant D. nuclear power plant
What is solar roof panels
Which human activity contributes to the formation of acid rain?
A. using too much fertilizer in agriculture B. cutting down large areas of tropical forests C. burning fossil fuels such as coal and gasoline D. using chemicals that destroy ozone in the stratosphere
What is burning fossil fuels such as coal and gasoline?