Science test 2 for grade 9 term 2

In what direction does heat flow?

• cold to hot

• cold to cold

• hot to hot

• hot to cold

This type of energy depends on mass, temperature and the phase of an object.

• nuclear

• chemical

• thermal

• electrical

An increase in the volume of a material due to a temperature increase in the material.

• Thermal contraction

• Thermal expansion

• Thermal heat

• Thermal Energy

The amount of heat needed to raise the temperature of one gram of a material by one degree Celsius is called

• specific heat.

• thermal energy.

• heat engines.

• waste heat.

 How many joules of heat are needed to raise the temperature of 10.0 g of aluminum from 22°C to 55°C, if the specific heat of aluminum is 0.90 J/gx°C?    

• 297 Joules

• 0.003 Joules

• 297 J/gx°C

• 0.003 J/gx°C

What  is the formula to calculate heat energy required to raise the temperature of any substance?

• Q=mc∆t
• Q=mc
• Q= ½mv
• m=QC

Work is a transfer of

• energy.

• force.

• mass.

• motion.

Which of the following increases when an object becomes warmer?

• chemical energy

• elastic potential energy

• nuclear energy

• thermal energy

The energy stored in gasoline is

• chemical energy.

• electromagnetic energy.

• mechanical energy.

• nuclear energy.

Nuclear power plants are designed to convert nuclear energy into what type of energy?

• chemical

• electrical

• geothermal

• mechanical