Circuits and Electricity
Which of the following converts electrical energy into motion?
a) light switch
b) electric stove
c) light bulb
d) electric fan
d) electric fan
Which of the following systems breaks down food into nutrients that can be used by the body?
a) circulatory
b) digestive
c) respiratory
d) reproductive
b) digestive
A group of students is building a model of an ecosystem. Which of the following organisms should the students select to act as a decomposer?
a) a tortoise
b) a mushroom
c) a flower
d) a spider
b) a mushroom
Where is most of Earth's water located?
Which of the following questions in testable in a scientific investigation?
a) Are dogs better than cats?
b) Are dogs happy when they are walked?
c) Are cats more active at night than during the day?
d) Are cats easier to take care of than dogs?
c) Are cats more active at night than during the day?
Which best describes a parallel circuit?
a) Electricity flows along one pathway.
b) The flow of electricity comes from one source.
c) Electricity flows along more than one pathway.
d) The flow of electricity comes from more than one source.
c) Electricity flows along more than one pathway.
Where does oxygen-rich blood go after leaving the lungs?
a) the brain
b) the kidney
c) the heart
d) the stomach
c) the heart
Below is a simple food chain:
Sun >> grass >> mouse >> coyote
Which of the following animals might compete with the coyote in this food chain?
a) owl
b) rabbit
c) woodpecker
d) deer
d) deer
Which of the following processes is responsible for changing liquid water into water vapor?
a) photosynthesis
b) condensation
c) evaporation
d) precipitation
DAILY DOUBLE OPPORTUNITY: Draw a picture of the correct process and earn DOUBLE points for your team!
c) evaporation
Which of these revolves around a planet?
a) an asteroid
b) a star
c) a comet
d) a moon
d) a moon
When electric current flows through the metal filament of a light bulb, electrical energy is converted to:
a) heat energy only
b) heat and light energy
c) light and motion energy
d) light energy only
b) heat and light energy
Which organ removes cell waste from the blood?
a) the kidney
b) the large intestine
c) the heart
d) the small intestine
a) the kidney
Which animals are most likely to carry the seeds found in berries from the parent plant to another area?
a) bees
b) birds
c) flies
d) caterpillars)
b) birds
Above a continent, a warm air mass slowly passes over a cold air mass. As the warm air begins to cool, clouds form. What will most likely happen next?
a) Rain will fall.
b) Hurricanes will form.
c) Lightning will strike.
d) Hail will form.
a) Rain will fall.
What characteristic do all birds share?
a) They can fly.
b) They have webbed feet.
c) They eat worms.
d) They have feathers.
d) They have feathers.
A balloon has a negative charge. A glass rod has a positive charge. What will happen when the glass rod is brought near the balloon?
a) The balloon will be attracted to the rod.
b) The balloon will be repelled by the rod.
c) The balloon will remain in place.
d) The balloon will spin in circles.
a) The balloon will be attracted to the rod.
Which best describes the role of the esophagus in digestion?
a) It releases acid and mixes food.
b) It aids in absorption of nutrients from food.
c) It carries food from the mouth to the stomach.
d) It carries food from the stomach to the intestines.
c) It carries food from the mouth to the stomach.
Decomposers are important in a food chain because they:
a) produce their own food using light from the Sun.
b) stop the flow of energy from one organism to another.
c) break down dead organisms and recycle nutrients into the soil.
d) are microscopic and other organisms cannot consume them.
c) break down dead organisms and recycle nutrients into the soil.
Why is watering plants and grass in the early morning a way to conserve water?
a) There is always more water in the morning.
b) Smaller amounts of water evaporate in the cool morning.
c) Water used in the morning can be recycled for afternoon use.
d) Grass can absorb water only in the morning.
b) Smaller amounts of water evaporate in the cool morning.
Why are most fossils found in sedimentary rocks?
a) Sedimentary rocks are not very old.
b) Organisms can be preserved in sedimentary rock.
c) Organisms live only in areas with sedimentary rock.
d) Sedimentary rocks are found only at the surface of the ground.
b) Organisms can be preserved in sedimentary rock.
An electrical circuit is a series circuit when:
a) it uses two light bulbs
b) the current from one battery flows through two light bulbs
c) it uses one battery
d) the current from one battery is divided between two light bulbs
b) the current from one battery flows through two light bulbs
Which list gives the correct order of food traveling through the digestive system after it is swallowed?
a) stomach, esophagus, large intestine, small intestine
b) small intestine, large intestine, esophagus, stomach
c) esophagus, stomach, large intestine, small intestine
d) esophagus, stomach, small intestine, large intestine
d) esophagus, stomach, small intestine, large intestine
Which of the following is classified as an omnivore?
a) a hummingbird
b) a wolf
c) a rabbit
d) a black bear
d) a black bear
Which of the following factors would most likely cause a hurricane to decrease in strength?
a) staying over a warm body of water for a long time
b) increasing the number of large clouds
c) moving over a continent
d) moving towards tropical waters
c) moving over a continent
Solve the following riddle:
I can be hot, I can be cold. I can run, and I can be still. I can be hard and I can be soft. What am I?
Water!