Clear Creek Science Bowl

A freshwater ecosystem has various food webs. One of these food webs is shown here. Which organisms transfer the most energy within the food web? (5.9B)

• Bass, because they are predators in this web

• Copepods, because they support two chains in this web

• Crayfish, because they are at the bottom of this web

• Algae, because they are the producers in this web

Tags

NGSS.MS-LS2-3

A scientist was studying a type of event that occurred on Earth in various places within a 30-day period. The circles indicate where the events happened. The events being studied involved rapid changes to Earth's surface at the locations shown on the map. What type of event do the circles on the map most likely represent? (3.7B)

• Landslides, because they are all located along ocean coastlines

• Volcanoes, because they occur only near the equator

• Earthquakes, because they occur on land and on the ocean floor

• Floods, because heavy rains can make riverbeds deeper and create deltas

Tags

NGSS.MS-ESS2-2

A teacher gives a student four clear sealed containers. Each container holds a different substance. The student records some observations about the substance in each container. Based on these observations, which container most likely holds only gas? (5.5A)

• Container 1

• Container 2

• Container 3

• Container 4

Tags

NGSS.MS-PS1-4

A group of students built the circuit shown here. The lightbulb does not glow. Which statement explains this observation? (5.6B)

• The battery is not charged.

• The lightbulb is not part of a complete circuit.

• The circuit does not have a switch.

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

Tags

NGSS.MS-ETS1-2

What is the primary cause of climate change?

• Solar radiation

• Natural disasters

• Human activities

• Earth's rotation

Tags

NGSS.MS-ESS3-4

NGSS.MS-ESS3-5

Which gas is most responsible for the greenhouse effect?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

Which of the following is a consequence of global warming?

• Decrease in sea levels

• Increase in biodiversity

• Melting of polar ice caps

• Decrease in global temperatures

Tags

NGSS.MS-ESS3-5

Which level of ecological organization is concerned with the interactions between different species within a community?

• Population

• Ecosystem

• Community

• Biosphere

Answer explanation

The correct answer is 'Community' because it is the level of ecological organization concerned with the interactions between different species within a community.

Tags

NGSS.MS-LS2-2

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? (5.10A)

• They help the organisms detect their surroundings.

• They help the organisms eat food quickly.

• They help the organisms fight predators.

• None of these

The table lists ways that four organisms obtain energy. Which organism obtains energy without depending on another organism? (5.9A)

• Oak tree

• Mushroom

• Cottontail rabbit

• Mountain lion

Tags

NGSS.MS-LS1-6