Physical Science Sem 1 Review Pt 1

Alyssa is pushing a shopping cart in a supermarket, and it is moving at a constant speed. What is the net force on the shopping cart?

• 10 N

• 0 N

• 25 N

• 1 N

During a science experiment, Alyssa was asked to demonstrate a type of magnet that can be turned on and off. Which magnet should she use?

• a refrigerator magnet

• an electromagnet

• magnetite

• iron

While observing the night sky, Chayston noticed a nebula starting to collapse. What is the primary reason for this phenomenon?

• A nearby star shining its light

• A passing spaceship

• A passing comet

• Gravity

Alyssa is pushing a box across the floor, and she notices that the box moves faster when she pushes harder. The sum of all the forces acting on the box is called the ____________________.

• force

• net force

• weight

• friction

Alyssa is driving her car and notices that the speedometer reading is increasing. This increase in speed is an example of a CHANGE in

• time it takes for one place to move to another place.

• velocity of an object.

• distance divided by the time interval

• velocity divided by the time interval

Roxy is pushing a shopping cart at the grocery store. The definition of momentum in this scenario is

• Mass in Motion

• The size of the shopping cart

• The velocity of the shopping cart

• A comparison between two shopping carts

During a car crash involving Chayston and Alyssa, the ______ is ALWAYS constant

• Total Momentum

• total speed

• total Velocity

• Energy

During a physics class, Rocksiana and Alyssa are discussing how certain physical quantities are described. Rocksiana mentions that like velocity, acceleration, and force, momentum is described by its direction as well as its quantity. This means it is a _______

• scalar quantity

• vector quantity

Alyssa is observing the electric field around a positively charged balloon. The electric field lines are directed:

• Away from the charge

• Toward the charge

As Alyssa and Rocksiana move further apart from each other, the pull of gravity between them

• Increases

• Decreases

• Stays the same