Tuesday 11/05

Multiple Choice

Which sentences from the passage describe different states or conditions of volcanoes?

• They form when magma from deep inside the Earth pushes up to the surface.

• Volcanoes can be dangerous, but they also create new land and rich soil for plants.

• When a volcano erupts, it can release ash, gases, and rocks into the air.

• Some volcanoes are active and erupt often, while others are dormant or extinct.

Multiple Choice

Which sentence from the passage suggests that volcanoes can have both harmful and beneficial effects?

• Volcanoes are powerful mountains that can erupt with hot lava.

• Volcanoes can be dangerous, but they also create new land and rich soil for plants.

• They form when magma from deep inside the Earth pushes up to the surface.

Multiple Choice

How does hitting a drum help explain sound waves?

 Which sentences from the text supports your answer?

• The drum's sound comes from its tight membrane, which makes it louder.

• The drum demonstrates how sound waves bounce back and forth in the air.

• The drum shows how hitting objects creates vibrations, but not sound waves.

• The drum’s vibrations create sound waves in the air, showing how sound travels when we hear.

Multiple Choice

Which sentence from the selection suggests that ears play an important role in keeping you away from danger?

• They [ears] help you stay safe on the playground.

• They [ears] help you learn during school.

• They [ears] tune into all kinds of sounds.

• Your ears work for you all day long.

Multiple Choice

Which sentence from the selection indicates the cochlea's role in hearing?

• They vibrate when they are struck by sound waves and they pass vibrations to a part in the inner ear called the cochlea.

• The cochlea is a fluid-filled coil, shaped like a snail’s shell.

• Sound waves from the middle ear make these hairs vibrate.

• Then, the nerves connected to the hairs send messages to the brain through the auditory nerve.

Multiple Choice

Which sentence supports the idea that sound moves?

• But I’d like to start by using this drum to tell you about sound waves.

• When I hit this drum, the sound waves travel across the room.

• The sound waves make your eardrum vibrate.

• 1. The vibrating eardrum makes the tiny bones in your middle ear vibrate and these bones make the tiny hairs in your cochlea vibrate.