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Lamar is studying water quality in his science class. He learns that salt water is seeping into his neighboring town’s water supply and makes the water dangerous to drink. Lamar’s teacher challenges his class to investigate ways to identify salt water without tasting it. Part A: Lamar has one glass of pure water and one glass of salt and water. The two liquids look exactly alike. What investigation can Lamar perform, without tasting the water, to find out which glass contains the salt water?

• Lamar couldn’t do it. A chemical change has taken place.

• Lamar could evaporate the water to see which cup leaves salt behind.

• Lamar couldn’t do it. It is not possible to identify clear liquids without tasting them.

• Lamar could shine a light into the water and check for salt conductivity.

Tags

NGSS.MS-PS1-2

Coach Vance coaches the 5th grade soccer team at Caddo Lake Elementary. He asks two students to help him prepare for practice and inflate the soccer ball to at least 420 grams but no more than 450 grams. The two students measure the mass of the ball when it was deflated and when it was inflated.
Part B: Which of the following best describes the particles of matter in the inflated soccer ball?

• The soccer ball changes shape and the different shape causes the ball to have more mass.

• The outside of the soccer ball is thicker, has more mass, and is made of solid particles.

• The air that is added to the soccer ball is made of unseen particles that move and fill the space inside of the soccer ball. This causes the soccer ball to have more mass.

• The air that is added to the soccer ball is made of unseen particles that become very large and remain in a fixed position. This causes the soccer ball to have more mass.

Tags

NGSS.MS-PS1-2

What are the planets From Closest so furthest from the sun?

• Neptune, Uranus, Saturn, Jupiter, Mars, Earth, Venus,Mercury

• Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus,Neptune

• Mercury, Venus, Mars, Earth, Jupiter, Saturn, Uranus,Neptune

• Venus, Mercury, Earth, Mars, Jupiter, Saturn, Uranus,Neptune

What is the primary gas found in the Earth's atmosphere?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Hydrogen

Which of the following is a renewable energy source?

• Coal

• Natural Gas

• Solar Energy

• Nuclear Energy

Tags

NGSS.HS-ESS3-4

What is the chemical formula for water?

Tags

NGSS.MS-PS1-1

Which planet is known as the Red Planet?

• Earth

• Mars

• Jupiter

• Venus

What is the process by which plants make their food using sunlight?

• Respiration

• Photosynthesis

• Digestion

• Transpiration

Tags

NGSS.MS-LS1-6

What is the boiling point of water at sea level?

• 100°C

• 0°C

• 50°C

• 200°C

Which element is represented by the symbol 'O'?

• Gold

• Oxygen

• Osmium

• Oganesson