Life Science
Which of these traits would best help an animal survive in the desert?
A has large horns or antlers
B needs little water to survive
C can climb trees quickly and easily
D can swim quickly away from predators
There is wire coiled around an iron bar. Which one of the following items should be attached to the ends of the wire to make an electromagnet?
A a nail
B a switch
C a battery
D a magnet
Which of these statements describes how clouds form?
A Clouds form when air containing water vapor rises, warms, and condenses on dust particles.
B Clouds form when air containing water vapor rises to where dust particles are located.
C Clouds form when air containing water vapor rises, cools, and condenses on dust particles.
D Clouds form when air containing water vapor falls to where dust particles are located.
Which of these lists only nonliving characteristics of most deserts?
A cacti, dry air, and sand
B cacti, snakes, and insects
C sand, lakes, and high temperatures
D sand, dry air, and high temperatures
The city of Los Angeles must provide drinking water to a large population. It rains mostly during the winter in Los Angeles.
Which of these methods would best help the city provide drinking water all year for the large population?
A create more streams
B store rainwater in reservoirs
C move water from the ocean to the city
D drink less water in the summer than in the winter
Which of these roles do decomposers play in an ecosystem?
A They eat living plants
B They catch and eat animals.
C They feed on living animals without killing them.
D They recycle matter from dead plants and animals.
In class, Celia connected a coil of wire to a battery and picked up a few paper clips. What could Celia put inside the coil to pick up more paper cliPs?
A a compass
B an iron nail
C a Plastic screw
D another battery
A forested area was cleared to build a new mall and parking lot. Aisha wondered if this changed the weather in that area.
Which of the following questions should Aisha ask to investigate the situation?
A What are the types of stores in the mall?
B How many people used the land after the mall was built?
C How many different species used the area before and after the mall was built?
D What was the average temperature of the area before construction and after the mall was built?
Which of these is usually found in coral reefs but not in lakes?
A fish
B sand
C snails
D salt water
Why does the Moon stay in orbit around Earth?
A Because Earth's gravitational pull is balanced by the Moon's motion
B because Earth and the Moon repel each other just as north and north on magnets do
C because the Moon is spinning in one direction and Earth is spinning in another direction
D because the Sun's gravitational pull on the Moon equals Earth's gravitational pull on the Moon
A bear eats berries. Which of these statements best describes the relationship between the bear and the plant?
A The plant helps the bear by providing it with food, and the bear helps the plant by dispersing its seeds.
B The plant helps the bear by providing shelter, and the bear harms the plant by eating its fruit.
C The bear helps the plant by dispersing its seeds, but the plant does not help or harm the bear.
D The plant helps the bear by providing it with food, and the bear does not help or harm the plant.
How is energy converted when a lamp is turned on?
A Electrical energy is converted into light energy and heat energy.
B Light energy is converted into heat energy and electrical energy.
C Electrical energy and heat energy are converted into light energy.
D Light energy and heat energy are converted into electrical energy.
What change happens in the outside air as an airplane flies higher in the atmosphere?
A There is more gravity.
B There is less air pressure.
C There is less heat from the Sun.
D There is more air pressure.
A compass needle is
A a long Piece of Plastic.
B a thin Piece of copper.
C a magnetized piece of iron
D a rolled up piece of aluminum foil'
Janel learned an easy way to conserve fresh water. Which of these activities can best conserve fresh water?
A Save fresh water by drinking bottled water.
B Turn off the running water when brushing your teeth.
C Clean the driveway and sidewalk with a hose that can be quickly shut off.
D 'Water the lawn with an automatic sprinkler that turns on every afternoon.
Robins build nests in the trees of a forest. Deer eat the leaves of the trees. After the trees die, termites eat the trunks of dead trees.
Which organisms are decomposers in this forest?
A deer
B trees
C robins
D termites
Cameron is going to build an electric motor for the science fair. First, he needs to construct an electromagnet.
What is the first step he must take in order to construct an electromagnet?
A get a battery, a wire, and an iron rod
B test the electromagnet using a compass
C attach the ends of the wire to the battery
D wrap the wire many times around the iron rod
Which of the following is the smallest obiect in our Solar System?
A a planet .
B a star
C a galaxy
D an asteroid
Water vapor is present in the atmosphere and falls to Earth as rain. What must occur for rain to fall?
A Ice crystals must melt in the atmosphere.
B Two clouds must collide in the atmosphere.
C Water vapor in clouds must become warm enough.
D Water droplets in clouds must become large enough.
Hurricanes are storms that form over the ocean. What conditions cause hurricanes to form?
A cool ocean water and dry air
B warm ocean water and dry air
C cool ocean water and moist air
D warm ocean water and moist air
which of these are least lìkely to be in a place that gets a large amount of rain throughout the year?
A ferns
B cacti
C grasses
D large trees
Liz places two bar magnets next to each other with the south side near each other. Which of these best predicts what will happen when she lets go of the magnets?
A The magnets will not move at all
B The magnets will rotate in circles
C The magnets will be attracted toward each other.
D The magnets will be repelled away from each other.
Cities along the ocean usually have
A cold winters and hot summers.
B cold winters and cool summers.
C mild winters and cool summers.
D mild winters and hot summers.
A weather balloon is released into the atmosphere. What would change the size of the balloon as it rises?
A an increase in temperature
B a decrease in carbon dioxide gas
C a decrease in atmospheric pressure
D an increase in atmospheric pressure
Which of these statements describes how the Sun produces heat?
A Heat is produced as the Sun travels through space.
B Heat is produced when hydrogen is made into helium through fusion.
C Heat is produced when hydrogen is burned and combined with oxygen.
D Heat is produced on the surface of the Sun and stored inside the Sun's core.