5th Grade Science STAAR Practice I

Some characteristics of objects in the solar system are listed here. Which of the listed characteristics describe both Earth and the moon?

• 
• 
• 
• 

About 50% of the electricity produced in the U.S. is created by burning coal. What form of energy is coal?

• Chemical

• Heat

• Light

• Natural

Astronauts who have walked on the Moon....

• weighed less on the Moon

• weighed more on the Moon

• had greater mass on the Moon

• felt greater magnetism on the Moon

In science, what is the definition of energy?

• Movement of things

• Ability to do work

• Use of electricity

• Cycle of work

The whiskers of a river otter and the antennae of a cockroach are shown here. How do structures such as whiskers and antennae benefit organisms?

• They help the organisms detect their surroundings.

• They help the organisms eat food quickly.

• They help the organisms fight predators.

• None of these

An energy company wants to build a hydroelectric power plant. Which of these characteristics of an area is most important to the development of a hydroelectric power plant?

• The area has a cool, rainy climate.

• The area is located in a valley with very little wind and frequent heavy fog.

• The area has a river that flows rapidly from nearby mountains through a valley.

• The area has no geysers or hot springs.

Which process would probably create the most rapid change in Earth's surface?

• Erosion

• Heating

• Volcanic eruption

• Weathering

Some students investigate the properties of four objects using a hand lens, a magnet, and a beaker containing water. Their observations are recorded in the table. Which statement identifies a property that could be used to classify these objects into two different groups?

• Density can be used to separate objects that sink in water from objects that do not.

• Magnetism can be used to separate objects that are attracted by a magnet from objects that are not.

• Solubility can be used to separate objects that dissolve in water from objects that do not.

• Physical state can be used to separate objects that are solids from objects that are not.

Which statement best describes the relationship between humans and plants in the carbon dioxide–oxygen cycle?

• Humans depend on oxygen released into the air by plants, and plants depend on carbon dioxide that humans release into the air.

• Plants produce carbon dioxide as a product of photosynthesis and release it into the air to provide energy for humans.

• Plants depend primarily on energy supplied by oxygen for photosynthesis, a process which releases carbon dioxide needed by humans.

• Humans and plants use gases in the air and the energy of sunlight to produce their own food.

Soil is made up of both living and non-living materials. Which of the following is a living material that might be found in soil?

• Air

• Algae

• Mineral

• Silt