Dynamic Planet Science Olympiad

Cracks in the seafloor called hydro-thermal vents send streams of hot water into the ocean. The water from a vent is 387°C. How many degrees above the boiling point of water is this temperature?

• 175°C

• 287°C

• 387°C

• 487°C

Tags

NGSS.MS-PS1-4

A teacher wears protective gloves to lift a metal pan filled with boiling water from a hot plate. Why are the protective gloves necessary?

• The metal pan creates thermal energy.

• The metal pan insulates thermal energy.

• The metal pan conducts thermal energy.

• The metal pan reduces thermal energy.

Tags

NGSS.MS-PS3-3

A student fills two identical beakers with the same volume of water. The student places on beaker in the freezer and the other beaker on a hot plate. After 5 minutes the student observes that the temperature of the water in the freezer is 19°C and the temperature of the water on the hot plate is 42°C. Which statement best describes the relationship between the two beakers of water and the freezing and boiling point of water?

• The temperature of the water on the hot plate must increase 58°C before it boils, and the temperature of the water in the freezer must decrease 32°C before it freezes.

• The temperature of the water on the hot plate is closer to the boiling point than the temperature of the water in the freezer is to the freezing point.

• The temperature of the water in the freezer must decrease by 19°C before it freezes, and the temperature of the water on the hot plate must increase 170°C before it boils.

• The temperature of the water in the freezer is closer to the freezing point than the temperature of the water on the hot plate is to the boiling point.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When a powdered drink mix was added to water, the liquid turned orange. A student decided the taste was too strong, so he poured out half of the liquid and added more water. Which of the following most likely occurred when more water was added?

• The physical state changed.

• The orange color became lighter

• The liquid had a sweeter taste.

• None of the above

Which of these best demonstrates the reflection of light?

• Looking through the glass of a large window.

• Looking at an image formed on a silver spoon.

• Looking at a lightbulb that is glowing.

• Looking at a star on a clear night.

Tags

NGSS.MS-PS4-2

A student adds 10 grams of four different powdered solids into four different beakers. The student then adds 100mL of water to each beaker, stirs the mixtures, and allows them to sit for half an hour before recording observations. Which question is the student most likely trying to answer with this investigation?

• At what water temperature do the substances dissolve?

• How much water is needed to cause a substance to change state?

• What causes a substance to sink when put in water?

• Which substances dissolve in water?

Which property describes minerals that break along smooth surfaces?

• Hardness

• color

• fracture

• cleavage

An echo is an example of a sound wave being

• transmitted

• absorbed

• reflected

• surfed

Tags

NGSS.MS-PS4-2

An example of an extrusive igneous rock that does not have any crystals.

• Granite

• Basalt

• Pumice

• Obsidian

The color of a mineral's powder is called ____________.