March 3

When using a solar-powered calculator, what source of energy is being used to power the calculator?

• Electrical Energy

• Light Energy

• Mechanical Energy

• Sound Energy

A student helped his father prepare soup for dinner. His father asked him to use a wooden spoon to stir the soup as it heated.

Why would the student's father ask him to use a wooden spoon?

• The wooden spoon is able to float in the soup

• the wooden spoon is able to sink in the soup

• the wooden spoon is a good conductor of thermal energy

• The wooden spoon is a good insulator of thermal energy

The arrows in the diagrams below represent light. Which diagram best shows how a glass mirror would reflect light?

• 
• 
• 
• 

An organism that hunts and feeds on another organism.

• Prey

• Carnivore

• Consumer

• Predator

A connection of food chains with many food energy paths in an ecosystem.

• food web

• food chain

• food lace

• food string

a living thing

• organism

• orange

• organic

• orangutan

Fran measured the bounce height of the same ball and recorded her results in the chart below. What did Fran most likely change in the experiment?

• the height of each drop

• the color of the ball

• the mass of the ball

• the temperature of the ball

Fertilizers used on farms near the coast can be carried to the ocean when runoff occurs during rain showers. These fertilizers can decrease the populations of fish and shellfish.

Which other populations most likely decrease as a result?

• Organisms that eat algae

• Organisms that live on farms

• Organisms that eat fish and shellfish

• All of these

A student created a diagram to compare the characteristics of the Earth and the Moon.
Which of the following characteristics could be placed in the center part of the diagram?

• orbits another object
• strong gravitational pull
• rotates every 24 hours
• has an atmosphere

How many days does it take for the Earth to revolve around the Sun one time?

• 24
• 1
• 365