4th Grade Science CBA 2 Review

Question 1- Students tested different objects to determine if they would float or sink in fresh water. What conclusion can be made from the results of the investigation shown in the table?

• Some of the objects have less density than water.

• All of the objects have more density than water.

• None of the objects have more density than water.

• All of the objects have less density than water.

Question 56- A glass of ice water is placed on a desk. A small puddle of water forms around the bottom of the glass. What causes the puddle of water to form?

• freezing

• evaporation

• condensation

• melting

Question 55 – Which gas in the atmosphere condenses to form clouds and rain?

• oxygen

• nitrogen

• water vapor

• carbon dioxide

Question 54 –The energy that causes ocean water to form water vapor comes from--

• clouds

• underwater mountains

• sun

• electrical energy

Question 53 – Fourth graders positioned two identical toy cars on these wooden ramps and released them. The experiment most likely tests they hypothesis that-?

• The height of the ramp affects the speed of the car.

• The ramps made of wood make the cars roll faster.

• Plastic cars travel faster than metal cars.

• The speed of the car is determined by tire size.

Question 52 – Which two tools would be the most useful in testing how the mass of an object can affect the distance it moves with a push?

• A spring scale and a hot plate.

• A graduated cylinder and a meter stick.

• A timer and a meter stick.

• A balance and a meter stick.

Question 51 – The process by which light is sent back from an object is called —

• magnification

• refraction

• symmetry

• reflection

Question 50 – What type of force do people use in a tug of war game?

• A push.

• friction

• gravity

• A pull

Question 49 –When clouds become too heavy, they will produce this. You may see it in four different ways.

• condensation

• evaporation

• freezing

• precipitation

Question 48 – Students were asked to rank some materials from the best insulators to the worst. Which of the following would correctly show the results?

• Foam cup, ceramic jar, metal cup, plastic cup

• Foam cup, metal cup, ceramic jar, plastic cup

• Foam cup, plastic cup, ceramic jar, metal cup

• Metal cup, ceramic jar, plastic cup, foam cup