Mixtures, Matter and Forces

The bobber is able to float in the water because -

• It has a greater density than the water

• It is too heavy to sink to the bottom

• It mass will not allow it to sink

• Its density is less than water

Tags

NGSS.3-PS2-1

The oven mitt shown here is being used because

• The mitts conduct thermal energy

• The pan conducts heat energy

• The pan is an insulator

• The mitts make the cook look cool

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

Pick two items that you know to be non magnetic

• Copper penny

• Iron Nail

• Paperclip

• Aluminum foil

Tags

NGSS.5-PS1-3

Students pour 4 different substances into 4 different containers and stir them to see what will happen? Which of the following will be the least likely to dissolve?

• Sand

• Salt

• Food coloring

• Sugar

Tags

NGSS.MS-PS1-2

The most ideal way to separate this mixture of sand and water is to -

• use a hot plate

• pour the mix through a strainer

• shake the mixture rapidly

• pour the mix through a coffee filter

One property of sugar is that it has a sweet taste. A student mixed sugar with water and made a clear solution. She tasted the solution, and it tasted like sugar. 
Which of the following is the best explanation of her observation?

• Dissolving the sugar did not change its taste properties.
• Dissolving the sugar created new taste properties.
• Dissolving the sugar made a new substance with different properties.
• Dissolving the sugar changed the total mass of the mixture. 

Tags

NGSS.MS-PS1-2

When two objects rub together, what force do they produce

• Gravity
• Air resistance
• Friction
• Water resistance

Which word describes a push or pull on an object?

• Position
• Hypothesis
• Mass
• Force

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A student drops a ball from shoulder height. The ball bounces 5 times before coming to a stop. What force causes the ball to fall to the ground?

• Friction
• Magnetism
• Position
• Gravity

Tags

NGSS.3-PS2-1

NGSS.5-PS2-1

Odin wants to know the maximum distance a toy car will travel when he gives it a strong push. Which experiment below best allows Odin to determine this?

• One that involves pushing the SAME toy car, with the SAME force, MANY times on the SAME surface
• One  that involves pushing TWO  toy cars, with the SAME force, FIVE times on the SAME surface
• One that involves pushing the SAME toy car, with a DIFFERENT force, MANY times on TWO different surfaces
• One that involves pushing TWO different toy cars, with a DIFFERENT force, FIVE times on TWO different surfaces

Tags

NGSS.MS-PS2-2