Front

A food chain is shown.
Grass   Mouse   Snake   Hawk
Which organism in the food chain is a producer?

Back

grass

Front

Wind is considered a renewable resource because the energy that drives the wind originally comes from

Back

the sun

Front

Which hot and dry biome is home to large herds of herbivores that feed on the many kinds of grasses?

Back

savannah

Front

Which set of objects best conducts electricity? Options: an iron washer and a metal fork, a door key and a rubber ball, a copper pipe and a wooden spoon, a rubber mallet and a glass measuring cup

Back

an iron washer and a metal fork

Front

The diagram shows Earth at four different locations around the sun. At which location is it summer in Earth’s Northern Hemisphere?

Back

1

Front

In a biotic response experiment, two plants with the same mass are placed in identical pots. Both plants are given the same amount of water, soil, and sunlight. After one week, the test plant is given one tablespoon of liquid fertilizer. Two weeks later, the data shows the test plant has the greater mass. What is the independent variable in this biotic response experiment?

Back

liquid fertilizer

Front

Which is a biotic factor of an alpine forest? Options: elk, rainfall, soil, mountains

Back

elk

Front

Early satellites were used to monitor weather. In which other area have satellites most benefitted humans? Options: medicine, navigation, fossil exploration, recycled materials

Back

navigation

Front

The diagram below shows a simple electrical circuit. What energy conversions occur when the switch is closed?

Back

chemical energy→electrical energy→light energy

Front

How is soil fertility in a deciduous forest dependent on the trees?

Back

Fallen leaves decay and make the soil rich with organic matter.