Physical Science 2019

Which of the following describes a chemical change of a tomato?

• The tomato is sliced up and put on sandwiches.

• The tomato gets old and smells sour like vinegar.

• A worm burrows into the tomato.

• The tomato shrivels as it loses water.

Micah dropped an effervescent tablet into a glass of water. The tablet began to fizz, and tiny bubbles formed in the water. The fizzing and bubbling are evidence that which of the following took place?

• The water turned into an effervescent solid when the tablet was dropped into the glass.

• A new substance was formed when the tablet was dropped into the water.

• The tablet made the water change from a liquid to a solid.

• The tablet turned into liquid water when it was dropped into the glass.

What is a closed circuit?

• an interrupted path of electricity

• a circular path that electricity is unable to travel through

• a connection of components which prevents electricity from flowing

• the complete path of an electrical current

Ashley is going to test four different objects - a wooden toy, a rubber eraser, an iron nail, and a plastic fork. One at a time, she will place each object to both metal terminals at the same time. Which object will most likely cause the light bulb to light up when she touches it to both terminals at the same time?

• a wooden toy

• a rubber eraser

• an iron nail

• a plastic fork

Which of the following is caused by static electricity?

• a light bulb coming on when a switch is turned on

• a magnet being attracted to a refrigerator

• a stove getting hot when it is turned on

• a lightning strike during a storm

Electromagnets and solid permanent magnets will both attract iron. How are electromagnets different than permanent magnets?

• Electromagnets can be made of plastic.

• Permanent magnets use a coil of wire.

• Permanent magnets can be turned off.

• Electromagnets can be turned off.

They had a toothpick, pencil, paper clip, safety pin, nail, and dime. He also gave them a magnet. He told them to predict which items are magnetic. How can they test their predictions?

• see which items stick to the magnet

• see which items stick to the pencil

• measure each of the items

• weigh each of the items

A battery or other device which provides energy for a circuit

• Conductor
• Power source
• Parallel circuit
• Complete circuit

• Series circuit
• Incomplete circuit
• Parallel circuit
• Power source

What is an insulator?

• The area of a conductor through which a current is able to move
• A material which does not allow electricity to go through it
• The amount of devices which are in a circuit
• A battery or other device which provides energy for a circuit

Tags

NGSS.MS-PS2-3