Warm Up Quiz

Based on the image, which of the following is true?

• Mass was lost in this chemical reaction because the atoms in the reactants are smaller than the atoms in the products.

• Mass could have either been gained or lost during this chemical reaction because atoms always change mass when they react.

• Mass was gained in this chemical reaction because there are more atoms in the products than there were in the reactants.

• Mass was conserved in this chemical reaction because the same atoms are present in both the products and the reactants.

Tags

NGSS.MS-PS1-5

Denver constructs an electric bell as shown in the diagram below. He then turns the switch on to test the bell. Denver notices that the hammer moves a bit towards the gong, but does not quite reach the gong. Which of the following should Denver do to best increase the chances of making the bell ring?

• decrease the size of the gong and the number of coils around the electromagnet

• increase the current produced by the battery and the number of coils around the electromagnet

• decrease the size of the gong and using a larger hammer

• increase the length of the arm supporting the hammer and using a heavier hammer

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which of the following is a force that acts at a distance?

• magnetism

• static electricity

• gravity

• all of these

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

______ is an example of a chemical property.

• Temperature

• Mass

• Reactivity

• Density

When a chemical change occurs,

• the newly formed substances have the same properties as the old substances.

• the colors of the substances involved never change.

• it is always because something was burned.

• new substances with new properties are formed.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Based on the image, which type of electromagnetic radiation carries the most energy?

• microwaves

• gamma rays

• X-rays

• radio waves

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

NGSS.HS-PS4-4

Heidi is sledding down a hill. As she moves down the hill, her _______ energy is being transformed into ________ energy.

• potential; magnetic
• potential; kinetic
• kinetic; potential

• heat; chemical

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which type of radiation would be most effective for radiation therapy?

• ultraviolet light

• radio waves

• infrared light

• gamma rays

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4

The diagram below shows a simple electric motor, which uses a loop of wire between two magnets. A battery produces an electric current in the loop of wire. The motor is used for lifting a weight. Which of the following changes would enable the motor to lift a heavier weight?

• increasing the strength of the magnets

• switching the north and south poles of the magnets

• decreasing the amount of current in the wire loop

• moving the magnets farther apart from each other

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS2-1

The amount of force needed to cause an object to accelerate depends upon

• the object's speed and direction.

• the object's mass and volume.

• the object's mass and the net force acting on it.

• the object's volume and the net force acting on it.

Tags

NGSS.MS-PS2-2