Science Quiz

Why do scientists attempt to replicate the results of other scientists' experiments?

• To learn from them

• To take the experiment one step further

• Because it is easier than coming up with their own idea

• To determine if the original results were accurate

Which type of scientific investigation would be best for determining the feeding behaviors of humpback whales in the North Atlantic Ocean?

• Modeling

• Field studies

• Laboratory experimentation

• Systematic observation of killer whales in an aquarium

A ball is sitting at the top of a ramp. As the ball rolls down the ramp, the potential energy of the ball decreases. What happens to the potential energy as the ball moves?

• It is lost as gravitational energy

• It is converted to kinetic energy

• It is destroyed as the ball moves

• It is used to make the ball slow down

As heat is added to an ice cube, it begins to melt. What causes melting?

• Heat causes attraction between the particles of matter in the ice cube to weaken

• Heat removes thermal energy from the ice cube and causes it to become liquid

• The additional energy causes the bonds between hydrogen and oxygen in the ice cube to break

• The addition of thermal energy to the ice cube strengthens the bonds that hold water molecules together

Electromagnetic energy is classified by the length and frequency of its wave. Which form of electromagnetic energy has the shortest wavelength?

• Radio waves

• Gamma rays

• Infrared waves

• Ultraviolet waves

What causes light to slow down?

• Moving into a lighter medium

• Moving into a vacuum

• Moving into a less adhesive medium

• Moving into a denser medium

Which of the following statements about how sound travels is correct?

• Sound waves travel the fastest through gases and slowest through liquids

• Sound waves travel faster through gases than solids

• Sound waves travel fastest through liquids and the slowest through solids

• Sound waves travel faster through solids than through liquids

What characteristic of the outer core makes it unique among the layers of the Earth?

• The outer core is liquid due to intense heat

• The outer core is the coolest layer of Earth

• The outer core is made of solid iron, giving it a lot of rigidity

• The outer core is able to flow, even though it is made of rock

The motion of tectonic plates can cause both slow and rapid changes in Earth's surface. Which is an example of a rapid change?

• Earthquake

• Seafloor spreading

• Mountain building

• Ocean trench formation

Tectonic plates can be made of continental crust or oceanic crust, or a combination of the two. What landform would likely result from the collision of two continental plates?

• Volcano

• Mountain range

• Mid-ocean ridge

• rift valley