Science STAAR Review

Multiple Choice

Which of these is the best conductor of electricity?

• Glass Rod

• Cotton String

• Plastic Tubing

• Copper Penny

Multiple Choice

• They all have the same physical state and conduct electricity

• They all conduct electricity and attract the same metal objects.

• They all attract the same metal objects and are not soluble in water

• They all are not soluble in water and have the same physical state.

Multiple Choice

• Plants require less energy than insects require to undergo changes from a young organism to a mature organism.

• Insects and plants follow a series of changes that allows them to survive and reproduce.

• Insects are more likely than plants are to adapt to changes in the environment to survive.

• Insects and plants are dependent on one another for survival.

Multiple Choice

• Bald eagles and spotted sandpipers

• Swamp rabbits, hermit crabs, and swamp sparrows

• Phytoplankton, hermit crabs, and blue crabs

• Wiregrass, clover grass, and phytoplankton

Multiple Choice

A farmer keeps bees to pollinate crops. The farmer makes several observations about the bees.

Which of these observations describes a learned behavior?

• Bees make return trips to drink sugar water from a bowl placed 40 meters from their hive.

• Bees have dark eyes and black-and-yellow stripes.

• Bees produce honey from the nectar they collect.

• Bees will sting when threatened or disturbed.

Multiple Choice

• The battery is not charged.

• The circuit does not have a switch to turn on.

• The lightbulb is not part of a complete circuit.

• The bell uses most of the energy from the battery.

Multiple Choice

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?

• By releasing oxygen into the air

• By returning nutrients to the soil

• By making space for new animals

• By decreasing the population of herbivores

Multiple Choice

Which of these best demonstrates the reflection of light?

• Looking through the glass of a large window

• Looking at an image formed on a silver spoon

• Looking at a lightbulb that is glowing

Multiple Choice

Which of these cycles is a direct result of Earth’s rotation?

• Rainfall and evaporation

• Day and night

• Moon phases

• Seasons

Multiple Choice

• The pedals, gears, and chain help turn the wheels.

• The wheels turn when the bicycle moves.

• The front wheel guides the bicycle as it moves.

• The reflector allows the bicycle to be seen at night.

Multiple Choice

Students observe a glass of ice and water. The glass is dry on the outside. After ten minutes students see drops of water on the outside of the glass.

Which statement best explains the students’ observations?

• The cold water inside the glass rises and then slides down the outside of the glass.

• The ice in the glass melted and caused the water to overflow the glass.

• The water vapor in the air changes to a liquid when it touches the cold glass.

• The water moved to the outside surface through tiny holes in the glass.

Multiple Choice

Which question can scientists most likely answer from studying the fossil of the dinosaur?

• What was the pattern on the skin of the dinosaur?

• What was the type of food the dinosaur ate?

• How fast was the heart of the dinosaur beating?

• How many eggs were in the nest of the dinosaur?

Multiple Choice

Water flows through turbines in dams like the one shown below. The flowing water makes the turbines spin.

What type of energy is used to make the turbines spin in this type of dam?

• Light energy

• Thermal energy

• Sound energy

• Mechanical energy

Multiple Choice

The graph below shows changes in the length of the shadow of a tree during part of a day.

If this day continues to be sunny, what will most likely happen to the length of the shadow from 2 P.M. to 4 P.M.?

• The length of the shadow will stay the same.

• The length of the shadow will decrease and then increase.

• The length of the shadow will increase.

• The length of the shadow will decrease.