Jenny was thinking about going outside to play but the news reported that there would be a chance of precipitation by 4 pm. The thermometer outside her home measures 11°C (51°F). What type of precipitation will<br />she be experiencing if the cold front decreases the temperature by twelve?

• Hail
• Rain
• Sleet
• Snow

Tags

NGSS.MS-ESS2-5

A metal spoon was left in a pot of boiling soup. The cook burned a finger by touching the metal spoon. Why did the cook burn his finger?

• The metal spoon is an insulator and an insulator allows heat to pass through.
• The cook’s hand acted as a insulator and allowed electricity to flow.
• The metal spoon is a conductor and allowed heat to pass through.
• The boiling soup spilled out of the pot and burned his hand.

The table lists properties of four different objects. Which of the substances is sugar water and a paperclip?

• Samples 1 and 2
• Samples 3 and 4
• Samples 1 and 3
• Samples 2 and 3

Tags

NGSS.MS-PS1-4

A student classifies the objects shown based on their physical properties. Which objects can be classified as insulators?

• Cotton ball, plastic ruler, and a penny
• Metal paper clip, key, iron nail
• Rubber band, cotton ball, iron nail
• plastic ruler, rubber band, eraser

Tags

NGSS.MS-PS3-3

Students are gathering materials and building an electrical circuit. What materials do they need to find in order to construct a complete circuit.

• Copper wires, closed switch, and a metal spoon
• Battery, copper wires, open switch , and a light bulb
• light bulb, solar panel, copper wires
• light bulb, copper wires, closed switch

Students gathered the following materials. What are the students trying to investigate?

• The students are trying to construct a circuit to investigate the conductivity of electricity.

• The students are investigating whether the materials dissolve in water.

• The students are investigating whether the objects will change states.

• The students are constructing a circuit to investigate the density of the materials.

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS2-3

The diagram below shows a mixture of salt and water. After the students mixed the salt, it dissolved in the water and created a new substance. How can the students separate this new substance?

• Use filter paper, the water will flow and the salt will stay on the filter paper.

• Use a hot plate, the water will boil and become water vapor while the salt stays behind on the beaker.

• Use a sieve, the sieve will hold the salt while the water flows to the beaker.

• Wait for the salt to separate from the water after 20 minutes because salt is less dense than water.

Tags

NGSS.MS-PS1-2

The students are conducting an investigation. They have gathered the following materials and placed their observations below. Which physical property of matter are the students investigating?

• Density because only the iron nail is more dense than water

• Conductors of electricity because yarn, plastic straws, and copper wires do not allow electricity to flow.

• States of matter because all the materials are solid.

• Magnetism because copper wires, yarn, and plastic straws are not magnetic.

Students measured 100 ml of water and poured it inside a beaker. The teacher then asked the students to place 50 ml of water in the freezer and 50 ml of water in a hot plate for 20 minutes. What did the students most likely observe after 20 minutes?

• The water in the freezer became a solid while the water on the hotplate had evaporated.

• The water in the freezer stayed a liquid, while the water on the hotplate was boiling.

• The water in the freezer “disappeared: while the water in the hotplate stayed a liquid.

• Both the water in the freezer and the hotplate keep the same state of matter.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The picture below shows a balanced scale using a box and ping pong balls. Students are investigating using this pan balance. What are they trying to measure?

• Volume of the mystery box compared to the ping pong balls.

• The size of the box compared to the ping pong balls.

• The density of the box and the ping pong balls.

• The mass of the mystery box compared to the ping pong balls.